• visible variant TB0903-BKYD TB0903-BKZD TB0903-BKPD TB0903-BK8D TB0903-BKPL TB0903-BKOL^^Techonaut 45 in Black Ballistic
  • visible variant TB0903-BKPD^^ An open Techonaut 45 with a Black exterior and an Cerise (pink) interior.
  • visible variant TB0903-BKYD^^ An open Techonaut 45 with a Black exterior and a Wisteria (pale purple) interior.
  • visible variant TB0903-BK7D^^ An open Techonaut 45 with a Black exterior and a Tidal (denim blue) interior.
  • visible variant TB0903-BBZD^^ An open Techonaut 45 with a Black exterior and a Zest (orange) interior.
  • visible variant TB0903-BKZD^^ An open Techonaut 45 with a Black exterior and a Zest (orange) interior.
  • visible variant TB0903-BB8D TB0903-BK8D^^ An open Techonaut 45 with a Black exterior and a Taiga (sage green) interior.
  • visible variant TB0903-BKOL^^Techonaut 45 in Black Ballistic with a Cobalt 210 Cerylon
  • visible variant TB0903-BKND TB0903-BBND^^ A Techonaut 45 with a Black exterior.
  • visible variant TB0903-BKND TB0903-BBND^^ An open Techonaut 45 with a Black exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-BKLD TB0903-BBLD^^ An open Techonaut 45 with a Black exterior and an Island (bright blue) interior.
  • visible variant TB0903-BKFD^^ An open Techonaut 45 with a Black exterior and an Fjord (blue) interior.
  • visible variant TB0903-UKYD TB0903-UKND TB0903-UK7D TB0903-UKGL^^ A Techonaut 45 with an Aubergine (red-ish purple) exterior.
  • visible variant TB0903-UKGL^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Mountain Grey (grey with light grey grid) interior.
  • visible variant TB0903-TBND TB0903-TKND TB0903-TKGL^^ A Techonaut 45 with a Burnt Orange exterior.
  • visible variant TB0903-TBND TB0903-TKND^^ An open Techonaut 45 with a Burnt Orange exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-TKGL^^ An open Techonaut 45 with a Burnt Orange exterior and a Mountain (grey) interior.
  • visible variant TB0903-VB5D TB0903-VBND^^The Techonaut 45 in Verde 1050 Ballistic.
  • visible variant TB0903-VB5D^^The Techonaut 45 in Verde 1050 Ballistic with a Acai 200 Halcyon interior.
  • visible variant TB0903-VBND^^The Techonaut 45 in Verde 1050 Ballistic with a Northwest Sky 200 Halcyon interior.
  • visible variant TB0903-CBND^^ A Techonaut 45 with a Coyote (tan) exterior.
  • visible variant TB0903-CBND^^ An open Techonaut 45 with a Coyote (tan) exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-NBUD TB0903-NBND^^ A Techonaut 45 with a Navy exterior.
  • visible variant TB0903-DKZD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Zest (orange) interior.
  • visible variant TB0903-NBUD^^ An open Techonaut 45 with a Navy exterior and an Ultraviolet (bright purple) interior.
  • visible variant TB0903-NBND^^ An open Techonaut 45 with a Navy exterior and an Northwest Sky (light grey) interior.
  • visible variant TB0903-WK8D TB0903-WKLD^^ An open Techonaut 45 with a Wilderness (forest green) exterior.
  • visible variant TB0903-WK8D^^ An open Techonaut 45 with a Wilderness (forest green) exterior and a Taiga (olive green) interior.
  • visible variant TB0903-WKLD^^ An open Techonaut 45 with a Wilderness (forest green) exterior and a Island (blue) interior.
  • visible variant TB0903-DKKD TB0903-DKPD TB0903-DKZD TB0903-DK7D TB0903-DKGL TB0903-DKML TB0903-DK5D^^ A Techonaut 45 with a Deep Blue (dark blue) exterior.
  • visible variant TB0903-DKKD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Sitka (dark green) interior.
  • visible variant TB0903-DKPD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Cerise (pink) interior.
  • visible variant TB0903-DKML^^The Techonaut 45 in Deep Blue (dark blue) Ballistic with a Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0903-DK5D^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Acai (purple) interior.
  • visible variant TB0903-DK7D^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Tidal (faded blue) interior.
  • visible variant TB0903-UKND^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Northwest Sky (grey with white grid) interior.
  • visible variant TB0903-UK7D^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Tidal (pale blue with white grid) interior.
  • visible variant TB0903-UKYD^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Wisteria (pale purple with white grid) interior.
  • visible variant TB0903-RKGD TB0903-RKDL TB0903-RKLD TB0903-RKND^^ A Techonaut 45 with a Ursa (brown) exterior.
  • visible variant TB0903-RKGD^^ An open Techonaut 45 with a Ursa (brown) exterior and a Seafoam (pale green) interior.
  • visible variant TB0903-RKND^^ An open Techonaut 45 with a Ursa (brown) exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-RKDL^^ An open Techonaut 45 with a Ursa (brown) exterior and a Dusk (purplish-blue) interior.
  • visible variant TB0903-GKPD TB0903-GK4D TB0903-GKGD TB0903-GKLD TB0903-GKRL^^ A Techonaut 30 with a Nebulous Grey (dark grey) exterior.
  • visible variant^^ An open Techonaut 45 with a Nebulous Grey (medium grey) exterior and a Fjord (blue) interior.
  • visible variant TB0903-GKLD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Island (blue) interior.
  • visible variant TB0903-GKGD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Seafoam (pale green) interior.
  • visible variant TB0903-GK4D^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Sakura (pale pink) interior.
  • visible variant TB0903-GKPD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Cerise (bright pink) interior.
  • visible variant TB0903-CKND^^ An Techonaut 45 with a Coyote (curry brown) exterior.
  • visible variant TB0903-CKND^^ An Techonaut 45 with a Coyote (curry brown) exterior with a Northwest Sky 200 Halcyon (grey with white grid) interior..
  • visible variant TB0903-VHND^^ A Techonaut 45 with a Taiga (sage green) Halcyon exterior.
  • visible variant TB0903-VHND^^ An open Techonaut 45 with a Taiga (sage green) Halcyon exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-THND ^^ A Techonaut 45 with a Night Walk (dark grey blue) Halcyon exterior
  • visible variant TB0903-THND ^^ An open Techonaut 45 with a Night Walk (dark grey blue) exterior Halcyon and a Northwest Sky (grey) interior.
  • visible variant TB0903-SBWD^^ A Techonaut 45 with a Steel (grey) Ballistic exterior.
  • visible variant TB0903-SBWD^^ An open Techonaut 45 with a Steel (grey) Ballistic exterior and a Wasabi interior.
  • visible variant TB0903-BTZD^^Techonaut 45 in Black 420 Spectron
  • visible variant TB0903-BTZD^^Techonaut 45 in Black 420 Spectron with Zest 200 Halcyon
  • ^^New variant, photo coming soon.
  • visible lifestyle^^A person holding a full Spectron Techonaut 45 by the grab handle
  • visible lifestyle^^A person with their dog packing a Techonaut 45
  • visible lifestyle^^A person opening a Spectron Techonaut 45
  • visible lifestyle^^A person packing shoes in a Spectron Techonaut 45
  • visible lifestyle^^A Spectron Techonaut 45 packed with Packing Cube Shoulder Bags
  • visible lifestyle ^^ The back of a person wearing the Techonaut 45 as a backpack.
  • visible lifestyle^^ A side view of a person wearing the Techonaut 45 as a backpack.
  • visible lifestyle ^^ A Close up of the Techonaut 45s Edgeless Shoulder Straps.
  • visible lifestyle ^^ A person clipping the sternum strap on the Techonaut 45 closed.
  • visible lifestyle ^^ A profile view of a person wearing the Techonaut 45.
  • visible lifestyle ^^ A profile view of a 5 foot 5 inch person wearing the Techonaut 45.
  • visible lifestyle ^^ A person wearing the Techonaut 45 with a shoulder strap.
  • visible lifestyle^^ The mesh back panel of the Techonaut 45
  • visible lifestyle^^ A person retrieving a bottle from the side pocket of the Techonaut 45.
  • visible lifestyle^^ A person loading a Techonaut 45 into a car using the grab handle.
  • visible detail ^^ A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.
  • visible detail^^ A potential load out of the Techonaut 45, including clothing, toiletries, shoes, laptop, and a camera bag.
  • visible detail^^ A second potential load out of the Aeronaut 45, including clothes, toiletries, shoes, a water bottle, and a tablet.
  • visible detail ^^ A comparison of the front of the Techonaut 45 (left) and the Techonaut 30 (right).
  • visible detail ^^ A comparison of the backs of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A comparison of the grab handle side of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A comparison of the side view of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A top down view of the Techonaut 45 (left) and the Techonaut 30 (right).
  • visible detail ^^ A comparison of the fronts of the Techonaut 45 (left) and Techonaut 30 (right). The Techonaut 45 has a phone, Double Organizer Pouch and folded Pocket Travel Pillow next to it, and the Techonaut 30 has phone, Double Organizer Pouch and collapsible water bottle near it.
  • visible detail^^ A comparison of what can fit in the Techonauts. The Techonaut 45 (left) has a puffy coat stowed in the top grab handle and a Packing Cube in it's bottom pocket. The Techonaut 30 (right) has a Aeronaut 30 Travel Stuff Sack in its bottom pocket.
  • visible detail^^ A comparison of the Techonaut 45 (left) and Techonaut 30 (right) filled with Packing Cubes.
  • visible video
  • visible variant TB0903-BKYD TB0903-BKZD TB0903-BKPD TB0903-BK8D TB0903-BKPL TB0903-BKOL^^Techonaut 45 in Black Ballistic
  • visible variant TB0903-BKPD^^ An open Techonaut 45 with a Black exterior and an Cerise (pink) interior.
  • visible variant TB0903-BKYD^^ An open Techonaut 45 with a Black exterior and a Wisteria (pale purple) interior.
  • visible variant TB0903-BK7D^^ An open Techonaut 45 with a Black exterior and a Tidal (denim blue) interior.
  • visible variant TB0903-BBZD^^ An open Techonaut 45 with a Black exterior and a Zest (orange) interior.
  • visible variant TB0903-BKZD^^ An open Techonaut 45 with a Black exterior and a Zest (orange) interior.
  • visible variant TB0903-BB8D TB0903-BK8D^^ An open Techonaut 45 with a Black exterior and a Taiga (sage green) interior.
  • visible variant TB0903-BKOL^^Techonaut 45 in Black Ballistic with a Cobalt 210 Cerylon
  • visible variant TB0903-BKND TB0903-BBND^^ A Techonaut 45 with a Black exterior.
  • visible variant TB0903-BKND TB0903-BBND^^ An open Techonaut 45 with a Black exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-BKLD TB0903-BBLD^^ An open Techonaut 45 with a Black exterior and an Island (bright blue) interior.
  • visible variant TB0903-BKFD^^ An open Techonaut 45 with a Black exterior and an Fjord (blue) interior.
  • visible variant TB0903-UKYD TB0903-UKND TB0903-UK7D TB0903-UKGL^^ A Techonaut 45 with an Aubergine (red-ish purple) exterior.
  • visible variant TB0903-UKGL^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Mountain Grey (grey with light grey grid) interior.
  • visible variant TB0903-TBND TB0903-TKND TB0903-TKGL^^ A Techonaut 45 with a Burnt Orange exterior.
  • visible variant TB0903-TBND TB0903-TKND^^ An open Techonaut 45 with a Burnt Orange exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-TKGL^^ An open Techonaut 45 with a Burnt Orange exterior and a Mountain (grey) interior.
  • visible variant TB0903-VB5D TB0903-VBND^^The Techonaut 45 in Verde 1050 Ballistic.
  • visible variant TB0903-VB5D^^The Techonaut 45 in Verde 1050 Ballistic with a Acai 200 Halcyon interior.
  • visible variant TB0903-VBND^^The Techonaut 45 in Verde 1050 Ballistic with a Northwest Sky 200 Halcyon interior.
  • visible variant TB0903-CBND^^ A Techonaut 45 with a Coyote (tan) exterior.
  • visible variant TB0903-CBND^^ An open Techonaut 45 with a Coyote (tan) exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-NBUD TB0903-NBND^^ A Techonaut 45 with a Navy exterior.
  • visible variant TB0903-DKZD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Zest (orange) interior.
  • visible variant TB0903-NBUD^^ An open Techonaut 45 with a Navy exterior and an Ultraviolet (bright purple) interior.
  • visible variant TB0903-NBND^^ An open Techonaut 45 with a Navy exterior and an Northwest Sky (light grey) interior.
  • visible variant TB0903-WK8D TB0903-WKLD^^ An open Techonaut 45 with a Wilderness (forest green) exterior.
  • visible variant TB0903-WK8D^^ An open Techonaut 45 with a Wilderness (forest green) exterior and a Taiga (olive green) interior.
  • visible variant TB0903-WKLD^^ An open Techonaut 45 with a Wilderness (forest green) exterior and a Island (blue) interior.
  • visible variant TB0903-DKKD TB0903-DKPD TB0903-DKZD TB0903-DK7D TB0903-DKGL TB0903-DKML TB0903-DK5D^^ A Techonaut 45 with a Deep Blue (dark blue) exterior.
  • visible variant TB0903-DKKD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Sitka (dark green) interior.
  • visible variant TB0903-DKPD^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Cerise (pink) interior.
  • visible variant TB0903-DKML^^The Techonaut 45 in Deep Blue (dark blue) Ballistic with a Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0903-DK5D^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Acai (purple) interior.
  • visible variant TB0903-DK7D^^ An open Techonaut 45 with a Deep Blue (dark blue) exterior and a Tidal (faded blue) interior.
  • visible variant TB0903-UKND^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Northwest Sky (grey with white grid) interior.
  • visible variant TB0903-UK7D^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Tidal (pale blue with white grid) interior.
  • visible variant TB0903-UKYD^^ An open Techonaut 45 with an Aubergine (red-ish purple) exterior and a Wisteria (pale purple with white grid) interior.
  • visible variant TB0903-RKGD TB0903-RKDL TB0903-RKLD TB0903-RKND^^ A Techonaut 45 with a Ursa (brown) exterior.
  • visible variant TB0903-RKGD^^ An open Techonaut 45 with a Ursa (brown) exterior and a Seafoam (pale green) interior.
  • visible variant TB0903-RKND^^ An open Techonaut 45 with a Ursa (brown) exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-RKDL^^ An open Techonaut 45 with a Ursa (brown) exterior and a Dusk (purplish-blue) interior.
  • visible variant TB0903-GKPD TB0903-GK4D TB0903-GKGD TB0903-GKLD TB0903-GKRL^^ A Techonaut 30 with a Nebulous Grey (dark grey) exterior.
  • visible variant^^ An open Techonaut 45 with a Nebulous Grey (medium grey) exterior and a Fjord (blue) interior.
  • visible variant TB0903-GKLD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Island (blue) interior.
  • visible variant TB0903-GKGD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Seafoam (pale green) interior.
  • visible variant TB0903-GK4D^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Sakura (pale pink) interior.
  • visible variant TB0903-GKPD^^ An open Techonaut 30 with a Nebulous Grey (dark grey) exterior and an Cerise (bright pink) interior.
  • visible variant TB0903-CKND^^ An Techonaut 45 with a Coyote (curry brown) exterior.
  • visible variant TB0903-CKND^^ An Techonaut 45 with a Coyote (curry brown) exterior with a Northwest Sky 200 Halcyon (grey with white grid) interior..
  • visible variant TB0903-VHND^^ A Techonaut 45 with a Taiga (sage green) Halcyon exterior.
  • visible variant TB0903-VHND^^ An open Techonaut 45 with a Taiga (sage green) Halcyon exterior and a Northwest Sky (grey) interior.
  • visible variant TB0903-THND ^^ A Techonaut 45 with a Night Walk (dark grey blue) Halcyon exterior
  • visible variant TB0903-THND ^^ An open Techonaut 45 with a Night Walk (dark grey blue) exterior Halcyon and a Northwest Sky (grey) interior.
  • visible variant TB0903-SBWD^^ A Techonaut 45 with a Steel (grey) Ballistic exterior.
  • visible variant TB0903-SBWD^^ An open Techonaut 45 with a Steel (grey) Ballistic exterior and a Wasabi interior.
  • visible variant TB0903-BTZD^^Techonaut 45 in Black 420 Spectron
  • visible variant TB0903-BTZD^^Techonaut 45 in Black 420 Spectron with Zest 200 Halcyon
  • ^^New variant, photo coming soon.
  • visible lifestyle^^A person holding a full Spectron Techonaut 45 by the grab handle
  • visible lifestyle^^A person with their dog packing a Techonaut 45
  • visible lifestyle^^A person opening a Spectron Techonaut 45
  • visible lifestyle^^A person packing shoes in a Spectron Techonaut 45
  • visible lifestyle^^A Spectron Techonaut 45 packed with Packing Cube Shoulder Bags
  • visible lifestyle ^^ The back of a person wearing the Techonaut 45 as a backpack.
  • visible lifestyle^^ A side view of a person wearing the Techonaut 45 as a backpack.
  • visible lifestyle ^^ A Close up of the Techonaut 45s Edgeless Shoulder Straps.
  • visible lifestyle ^^ A person clipping the sternum strap on the Techonaut 45 closed.
  • visible lifestyle ^^ A profile view of a person wearing the Techonaut 45.
  • visible lifestyle ^^ A profile view of a 5 foot 5 inch person wearing the Techonaut 45.
  • visible lifestyle ^^ A person wearing the Techonaut 45 with a shoulder strap.
  • visible lifestyle^^ The mesh back panel of the Techonaut 45
  • visible lifestyle^^ A person retrieving a bottle from the side pocket of the Techonaut 45.
  • visible lifestyle^^ A person loading a Techonaut 45 into a car using the grab handle.
  • visible detail ^^ A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.
  • visible detail^^ A potential load out of the Techonaut 45, including clothing, toiletries, shoes, laptop, and a camera bag.
  • visible detail^^ A second potential load out of the Aeronaut 45, including clothes, toiletries, shoes, a water bottle, and a tablet.
  • visible detail ^^ A comparison of the front of the Techonaut 45 (left) and the Techonaut 30 (right).
  • visible detail ^^ A comparison of the backs of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A comparison of the grab handle side of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A comparison of the side view of the Techonaut 45 (left) and Techonaut 30 (right).
  • visible detail ^^ A top down view of the Techonaut 45 (left) and the Techonaut 30 (right).
  • visible detail ^^ A comparison of the fronts of the Techonaut 45 (left) and Techonaut 30 (right). The Techonaut 45 has a phone, Double Organizer Pouch and folded Pocket Travel Pillow next to it, and the Techonaut 30 has phone, Double Organizer Pouch and collapsible water bottle near it.
  • visible detail^^ A comparison of what can fit in the Techonauts. The Techonaut 45 (left) has a puffy coat stowed in the top grab handle and a Packing Cube in it's bottom pocket. The Techonaut 30 (right) has a Aeronaut 30 Travel Stuff Sack in its bottom pocket.
  • visible detail^^ A comparison of the Techonaut 45 (left) and Techonaut 30 (right) filled with Packing Cubes.
  • visible video
(288 Reviews)

Techonaut 45

$415

Ready to Ship

Techonaut 45 is the ultimate one-bag travel backpack — built to handle extended trips with maximum capacity, smart organization, and all-day carry comfort.

What Goes Into A TOM BIHN Backpack?

Each bag is meticulously designed in our Seattle factory using premium, hard-wearing materials—and built to last a lifetime, guaranteed. You're not just buying a bag, you're investing in decades of thoughtful design, durable function, and responsible craftsmanship.

Techonaut 30
 visible lifestyle ^^ A profile view of a person wearing the Techonaut 45.
Techonaut 45
  • Techonaut 30
  • visible lifestyle ^^ A profile view of a person wearing the Techonaut 45.
    Techonaut 45
Color & Material

Exterior Color:
Black
Interior Color:
Zest
Exterior Material:
420 Spectron
Interior Material:
200 Halcyon

Available Color options
Made in Seattle
Carry-on Friendly
Laptop Compartment
Lifetime Guarantee

Join the Waitlist!

Description

The Techonaut 45 is the largest in the Techonaut lineup, offering more capacity than the Techonaut 30 while still meeting most airline carry-on requirements. Its spacious main compartment and versatile design make it ideal for extended travel, all while delivering the thoughtful organization, comfort, and durability the Techonaut series is known for.

visible lifestyle ^^ The back of a person wearing the Techonaut 45 as a backpack.

Built for the Way You Move

Engineered for one-bag travel, the Techonaut 45 combines maximum capacity, thoughtful organization, and all-day carry comfort. Built to last, made to move with you.

visible lifestyle ^^ The back of a person wearing the Techonaut 45 as a backpack.

Built for the Way You Move

Engineered for one-bag travel, the Techonaut 45 combines maximum capacity, thoughtful organization, and all-day carry comfort. Built to last, made to move with you.

This is a carousel with slides that contain product key features. Use Next and Previous buttons to navigate.

Techonaut 45 Key Features

visible lifestyle ^^ A profile view of a 5 foot 5 inch person wearing the Techonaut 45.

Three-Way Carry, Endless Flexibility

Three carry options adapt to your needs — backpack, duffel, or shoulder bag — each designed for comfort, flexibility, and ease on the go.

visible detail ^^ A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.

Pack More, Unpack Less

Wide-opening, U-shaped main compartment offers even more space and visibility than the Aeronaut — so you can pack big, find fast, and live out of your bag without unpacking.

Suspended Laptop Compartment, Built Light

Suspended off the bottom for extra protection, the padded laptop compartment adds structure and comfort — all without bulk, and always easy to access even when fully packed.

Accessible Pockets, Effortless Reach

Three quick-access pockets keep essentials close — each sized for easy reach and smart storage, from passports to water bottles.

End Pocket Reimagined, Space Maximized

One end pocket instead of two means more space, less weight, and a wider main compartment. Unzip the divider for one massive packing area — perfect for bulky items or flexible organization.

visible lifestyle ^^ A profile view of a 5 foot 5 inch person wearing the Techonaut 45.

Three-Way Carry, Endless Flexibility

Three carry options adapt to your needs — backpack, duffel, or shoulder bag — each designed for comfort, flexibility, and ease on the go.

visible detail ^^ A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.

Pack More, Unpack Less

Wide-opening, U-shaped main compartment offers even more space and visibility than the Aeronaut — so you can pack big, find fast, and live out of your bag without unpacking.

Suspended Laptop Compartment, Built Light

Suspended off the bottom for extra protection, the padded laptop compartment adds structure and comfort — all without bulk, and always easy to access even when fully packed.

Accessible Pockets, Effortless Reach

Three quick-access pockets keep essentials close — each sized for easy reach and smart storage, from passports to water bottles.

End Pocket Reimagined, Space Maximized

One end pocket instead of two means more space, less weight, and a wider main compartment. Unzip the divider for one massive packing area — perfect for bulky items or flexible organization.

visible lifestyle ^^ A profile view of a 5 foot 5 inch person wearing the Techonaut 45.

Three-Way Carry, Endless Flexibility

Three carry options adapt to your needs — backpack, duffel, or shoulder bag — each designed for comfort, flexibility, and ease on the go.

visible detail ^^ A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.

Pack More, Unpack Less

Wide-opening, U-shaped main compartment offers even more space and visibility than the Aeronaut — so you can pack big, find fast, and live out of your bag without unpacking.

Suspended Laptop Compartment, Built Light

Suspended off the bottom for extra protection, the padded laptop compartment adds structure and comfort — all without bulk, and always easy to access even when fully packed.

Accessible Pockets, Effortless Reach

Three quick-access pockets keep essentials close — each sized for easy reach and smart storage, from passports to water bottles.

End Pocket Reimagined, Space Maximized

One end pocket instead of two means more space, less weight, and a wider main compartment. Unzip the divider for one massive packing area — perfect for bulky items or flexible organization.

Reviews

4.9
Rated 4.9 out of 5 stars
Based on 288 reviews
Total 5 star reviews: 270 Total 4 star reviews: 14 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 1
Write a Review (Opens in a new window)
288 reviews
  • KM
    Kenneth M.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Sewn in USA, Good Storage Size
    14 hours ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Sewn in USA, Good Storage Size
    Rated 5 out of 5 stars
    My new Fav

    The Tom Bihn Techonaut 45 is hands down one of the best travel backpacks I’ve ever used. From the moment you pick it up, the craftsmanship and attention to detail are obvious. Built in the USA with top-tier materials and backed by a lifetime warranty, this pack feels like it’s designed to go anywhere and last forever.

    What makes it truly shine is the versatility. At 45 liters, it’s incredibly spacious yet still carry-on compliant, making it the perfect one-bag solution for everything from a quick weekend trip to extended international travel. The main compartment opens wide for easy packing, and the dedicated bottom pocket is perfect for shoes, laundry, or gear you want to keep separate.

    I also love the carry flexibility. The Techonaut can be used as a backpack, a duffel, or a shoulder bag, and it transitions seamlessly between modes. No matter how I carry it, the straps and handles feel sturdy and comfortable. The edgeless shoulder straps and ventilated back panel make wearing it for long stretches surprisingly easy, even when fully packed.

    The organization is another highlight. A padded, suspended laptop compartment keeps my computer safe and accessible, and the thoughtful pocket layout means there’s always a place for cords, chargers, and small essentials. Everything has its spot, yet the bag never feels overcomplicated.

    In short, the Techonaut 45 combines durability, comfort, and intelligent design better than almost any bag I’ve owned. It’s a true workhorse that looks…

    Was this helpful?
  • KS
    Kelli S.
    Verified Buyer
    Bought For Myself
    Product Standouts Sewn in USA, Unique, Thoughtful Design
    1 week ago
    Bought For Myself
    Product Standouts Sewn in USA, Unique, Thoughtful Design
    Rated 4 out of 5 stars
    4.5 stars

    I bought this bag after looking at it for weeks. I wanted to replace my osprey 44L transporter w something made in the US, that would also hold my giant company issued laptop. It’s been on three round trip plane journeys so far. It’s super roomy. So far, have two complaints: 1. Mesh back panel has a small snag in it already :(. 2. As another reviewer mentioned, it’s a bit hard to cinch the straps tight to your body. Could be me, I’m fairly petite.

    Was this helpful?
  • 奎张
    奎 张.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Sewn in USA, Durable, Good Storage Size, Unique
    1 week ago
    Bought For Myself
    Product Standouts Thoughtful Design, Sewn in USA, Durable, Good Storage Size, Unique
    Rated 4 out of 5 stars
    质量尚可

    出行方便，值得购买

    Was this helpful?
  • SS
    STUART s.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Good Storage Size
    1 week ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Good Storage Size
    Rated 5 out of 5 stars
    Perfect Backpack

    This is a beautifully designed backpack. More importantly, it rides on your back in such a balanced manner that it is incredibly comfortable.

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  • TA
    Tove A.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Good Storage Size, Easily Adjustable, Versatile
    2 weeks ago
    Bought For Myself
    Product Standouts Thoughtful Design, Good Storage Size, Easily Adjustable, Versatile
    Rated 5 out of 5 stars
    Perfect bag for 7-14 days!

    I just got my Techonaut in time for a 13 day vacation in England. I wanted to travel with only handluggage, and I needed clothes and shoes for: half-nice city attire, hiking trips (15 kilometers) and a proper celebration at a nice restaurant. With one large and three small packing cubes I was good to go. The big bottom compartment took hiking shoes and sandals, the back space took maps and such, and the main compartment took all the cubes. I am a happy customer!

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Why People Choose TOM BIHN

Travel-Ready Without the Bulk

Every bag is thoughtfully designed for effortless travel.

visible lifestyle^^A person retrieving a drink from the Synik 26 water bottle pocket

Effortless Organization, No Matter Your Day

Smart pockets and O-rings keep everything visible and within easy reach.

visible lifestyle^^A Nomad Tote with its front pocket open.

Built to Last a Lifetime

Made in Seattle with premium materials and backed by a lifetime guarantee.

Superior Construction. Thoughtful Design.

Every detail is obsessively crafted for function, flexibility, and joy in use—just like we’ve been doing since 1972.

Travel-Ready Without the Bulk

Every bag is thoughtfully designed for effortless travel.

visible lifestyle^^A person retrieving a drink from the Synik 26 water bottle pocket

Effortless Organization, No Matter Your Day

Smart pockets and O-rings keep everything visible and within easy reach.

visible lifestyle^^A Nomad Tote with its front pocket open.

Built to Last a Lifetime

Made in Seattle with premium materials and backed by a lifetime guarantee.

Superior Construction. Thoughtful Design.

Every detail is obsessively crafted for function, flexibility, and joy in use—just like we’ve been doing since 1972.

Travel-Ready Without the Bulk

Every bag is thoughtfully designed for effortless travel.

visible lifestyle^^A person retrieving a drink from the Synik 26 water bottle pocket

Effortless Organization, No Matter Your Day

Smart pockets and O-rings keep everything visible and within easy reach.

visible lifestyle^^A Nomad Tote with its front pocket open.

Built to Last a Lifetime

Made in Seattle with premium materials and backed by a lifetime guarantee.

Superior Construction. Thoughtful Design.

Every detail is obsessively crafted for function, flexibility, and joy in use—just like we’ve been doing since 1972.

Made in Seattle, Built to Last

Designed with obsessive attention to detail, we pride ourselves in offering bags in unmatched quality and durability—whether you're commuting, traveling, or navigating daily life. Built to last, made to move with you.

The BIHN Guarantee

Since 1972, we’ve stood behind every bag we make. If it’s our fault, we’ll fix it—no questions asked. For everything else, we offer honest repairs in the same Seattle shop where your bag was born.