• 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
  • A person with their dog packing a Techonaut 45
  • 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.
  •  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^^ A person loading a Techonaut 45 into a car using the grab handle.
  • visible detail^^ The mesh back panel of the Techonaut 45
  • visible detail^^  A person retrieving a bottle from the side pocket of the Techonaut 45.
  • A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.
  • 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
  • A person with their dog packing a Techonaut 45
  • 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.
  •  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^^ A person loading a Techonaut 45 into a car using the grab handle.
  • visible detail^^ The mesh back panel of the Techonaut 45
  • visible detail^^  A person retrieving a bottle from the side pocket of the Techonaut 45.
  • A potential load out of the Techonaut 45, including a LGD Waist Pack, packing cubes, a puffy jacket, and stuff sacks.
  • 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

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 handmade in the U.S. 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

Color & Material
Available Color options

Exterior Color:
Black
Interior Color:
Cerise
Exterior Material:
Ballistic
Interior Material:
200 Halcyon


Made in Seattle
Carry-on Friendly
Laptop Compartment
Lifetime Guarantee

Techonaut 45

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.

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

Techonaut 45 Key Features

 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.

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.

 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.

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.

 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.

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 292 reviews
Total 5 star reviews: 274 Total 4 star reviews: 14 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 1
292 reviews
  • S
    Solvita
    Verified Buyer
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Durable, Thoughtful Design
    6 months ago
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Durable, Thoughtful Design
    Rated 5 out of 5 stars
    Awesome for traveling with child

    I traveled with my two-year-old daughter alone from the USA to Europe, Australia, and Canada. In total, we spent 70 days traveling. I had this backpack, one suitcase, a diaper bag, one smaller backpack (Pacsafe® X 25L anti-theft backpack), and a shoulder bag (Pacsafe® LS200 anti-theft crossbody bag) and, of course, a lightweight travel stroller (Joolz Aer +). This bag was an integral part of the trip. From the USA to Europe, I was able to take this bag on the plane (Lufthansa), from Europe to Australia and from Australia and Canada I had to check it in. The backpack is very roomy, easy to carry, and move from one place to another. I think the bottom of the backpack's skeleton part was a bit more uncomfortable, it felt like the side straps or something extra were on my back. Perhaps this is because I am 164 cm tall and a 35 l backpack would have been more comfortable. But overall, I'm 100% satisfied with this backpack, and when we fly to Europe again in the summer, I think we'll be able to do it without a suitcase.

  • NA
    Nicolas A K.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, High Quality Finishings, Sewn in USA
    11 months ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, High Quality Finishings, Sewn in USA
    Rated 5 out of 5 stars
    Fantastic Quality

    Like every other TB product I own, the T45 is of impeccable quality and will be my primary carryon for the foreseeable future.

  • HK
    Holly K.
    Verified Buyer
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Thoughtful Design, Versatile, High Quality Finishings, Good Storage Size
    1 year ago
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Thoughtful Design, Versatile, High Quality Finishings, Good Storage Size
    Rated 5 out of 5 stars
    Just took on my first trip, purchased for future 3 month trip

    After having this as my primary bag (only a small personal item in addition), I have to say it lived up to the hype. I took it on a train trip across Canada and was gone for 10 days - after packing absolutely everything I wanted to, I still had room left over. The quality is superb and the design is stellar.

    I use the bag a bit differently that many others from what I can tell. Since I have a separate personal item (11 liters) in which I keep all my quick-grab items, I utilize the outside pockets for things I don't want to mess with daily. All my clothing, toiletries, liquids, undergarments, and sleepwear goes in the main compartment so I open it up and everything is easy access. My 2nd pair of shoes and my hotel room flip flops go into the bottom compartment with room for a few dirty clothing items so that they stay separate.

    I have no doubt I'll be able to fit everything in here that I need for a 3 month trip (I'm female and early 60s). The bag is on the larger side (I'd find a 40 liter optimal for my needs), but I prefer to just not pack it out completely rather than going smaller and having to play Tetris every time I need to pack up to move. For me, weight it much more of a factor than overall size of the bag and I'm able to keep it at about 17 pounds fully packed.

  • BW
    Bob W.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Versatile, Easily Adjustable, High Quality Craftsmanship, Good Storage Size
    1 year ago
    Bought For Myself
    Product Standouts Thoughtful Design, Versatile, Easily Adjustable, High Quality Craftsmanship, Good Storage Size
    Rated 5 out of 5 stars
    The 1-2 Week Japan Champ

    The Technonaut 45 is my goto for Japan business travel. Between this and my one other carry-on bag I can handle 2 weeks working in Japan. I purchased this because I wanted to experiment with bringing an Apple VisionPro with me. This case easily also carries my PC, journals, e-reader and support equipment. The side and end storage compartments are perfect in flight where I don't have to do any gymnastics to find that charger, cable or set of headphones. I go effortlessly place to place with the bag on my back or on my roller-bag. It fits perfectly underneath an airline seat. I take my essentials day to day in my Ristretto. I would buy this again in a heartbeat and I know I still haven't fully used all the features yet.

  • VE
    Victoria E.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Sewn in USA, Durable, Good Storage Size
    1 year ago
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Sewn in USA, Durable, Good Storage Size
    Rated 5 out of 5 stars
    Trolley handle – yes!

    Not only did I get a great welcome and personal introduction from the guy handling the walk-in guests, I came out with exactly with what I didn't think I needed. I was on the way to the airport and had to fit in a stop to the Tom Bihn factory - something on my bucket list after years of ordering online. I can no longer carry backpacks and thought I'd just purchase accessories/crossbody bags. After explaining my needs, the rep also showed me a backpack that converts to a trolley sleeve to slip over my luggage handle.

    The Techonaut 45 is the perfect 2nd bag to add to my carry-on rollie luggage. It fits under the seat and access during flight is easy due to the different outside pockets. Adding cubelets and stuff sacks helped immensely.

    At 4'11 with mobility issues, the Techonaut 45 was just the right size for my needs. I thought to cut off the shoulder straps but there is a pocket that they can be stored into.

    My wishlist is for a sack big enough to stuff my Techonaut in the event I have to check it in due to overcrowded flights.

    So happy with all my purchases from Tom Bihn and seeing all the faces that represent the brand with their hands-on touch for every product was a treat. I hope to visit again when my travels bring me back to Seattle. Thanks, everyone!

Quality Designs Since 1972

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We stand 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 our Seattle factory.