What Goes Into A TOM BIHN Backpack?





























































































































Join the Waitlist!
Description
The Aeronaut 45 is the largest in the Aeronaut lineup, offering more capacity than the Aeronaut 30 while still meeting most airline carry-on requirements. Its wide-opening main compartment, flexible end pockets, and three-way carry design make it ideal for extended travel — all while delivering the smart organization, durability, and adaptability the Aeronaut series is known for.
Three carry methods: Carry it your way — as a backpack, duffel, or shoulder bag — with straps that tuck away when not in use.
Stay organized on the go: Two quick-access pockets for storing your phone, earbuds, wallet, and passport.
Adaptable main compartment: Packs flat and neat with bookend-style end pockets and a zippered mesh pocket, plus unzip-able dividers for customizable space.
Versatile end pockets: Fit up to size 12 shoes and help separate clean from dirty gear, with zippered dividers that unzip to create two or one large compartment for flexible packing.
Support when you need it: Soft, supportive Edgeless shoulder straps and a removable padded back panel for customizable comfort and reduced bulk.
Travel-friendly design: Padded, reinforced grab handles are perfectly placed for easy, comfortable hauling from overhead bins or tight spaces — built tough for a strong pull when you need it.
Dimensions
21.9" (w) x 14" (h) x 9.1" (d) / 555 (w) x 355 (h) x 230 (d) mm
Weight
1050d high tenacity ballistic nylon: 3 lb 1 oz / 1395 grams
630d high tenacity ballistic nylon: 2 lb 15 oz / 1340 grams
420d Spectron: 2lb 10 oz / 1190 grams
Volume
45 liters / 2700 cu. in. (ASTM Standard Measure)
Straps
Bound-edge EV50 .375" / 10mm shoulder straps (EVAZOTE® OEKO-TEX® foam)
A set of Black Zipper Pulls
1x Sternum Strap Assembly
1 pair of Tie-Down Straps
Total O-Rings: 11
(2 in the main compartment
1 in the inside mesh pocket
1 in the left curved pocket
1 in the right curved pocket
3 in the left side pocket
3 in the right side pocket)
Exterior
bluesign® certified High-Tenacity 630 denier Ballistic nylon
Interior
bluesign® certified 210 denier Cerylon 6,6 Ripstop nylon
Back Panel
3/8" / 10mm thick back foam panel
Straps
Bound-edge EV50 .375" / 10mm shoulder straps (EVAZOTE® OEKO-TEX® foam)
Zippers
Main & Side Pockets: #10 YKK Racquet Coil Water-Repellent Zippers with lockable sliders
Diagonal Edge Pockets and Interior Pocket: #8 YKK Racquet Coil Water-Repellant Zippers
Interior Divider Zippers: #5 YKK Vislon Molded Tooth Zippers
This is a carousel with slides that contain product key features. Use Next and Previous buttons to navigate.
Aeronaut 45 Key Features

Three-Way Carry, Maximum Versatility
Three carry options adapt to any journey — backpack, duffel, or shoulder bag — all designed to keep you comfortable and moving with ease, no matter how you travel.

Pack Easy, Adapt Instantly
Spacious main compartment opens wide for easy packing, with zip-away end dividers for extra room and a mesh pocket in the lid to keep small items in check.

Convenient Pockets, Seamless Grab
Two quick-access pockets on each end — grab earbuds to passports in a snap, even from the overhead bin.

Double Pockets, Cleaner Packing
Two roomy end pockets add much-needed compartmentalization — perfect for separating clean from dirty or shoes from clothes, fitting up to a size 12 pair comfortably.

Edgeless Straps, All-Day Comfort
Switch seamlessly to backpack mode with cushy Edgeless straps and a removable foam back panel for comfort when you want it, and a lighter carry when you don’t.

Three-Way Carry, Maximum Versatility
Three carry options adapt to any journey — backpack, duffel, or shoulder bag — all designed to keep you comfortable and moving with ease, no matter how you travel.

Pack Easy, Adapt Instantly
Spacious main compartment opens wide for easy packing, with zip-away end dividers for extra room and a mesh pocket in the lid to keep small items in check.

Convenient Pockets, Seamless Grab
Two quick-access pockets on each end — grab earbuds to passports in a snap, even from the overhead bin.

Double Pockets, Cleaner Packing
Two roomy end pockets add much-needed compartmentalization — perfect for separating clean from dirty or shoes from clothes, fitting up to a size 12 pair comfortably.

Edgeless Straps, All-Day Comfort
Switch seamlessly to backpack mode with cushy Edgeless straps and a removable foam back panel for comfort when you want it, and a lighter carry when you don’t.

Three-Way Carry, Maximum Versatility
Three carry options adapt to any journey — backpack, duffel, or shoulder bag — all designed to keep you comfortable and moving with ease, no matter how you travel.

Pack Easy, Adapt Instantly
Spacious main compartment opens wide for easy packing, with zip-away end dividers for extra room and a mesh pocket in the lid to keep small items in check.

Convenient Pockets, Seamless Grab
Two quick-access pockets on each end — grab earbuds to passports in a snap, even from the overhead bin.

Double Pockets, Cleaner Packing
Two roomy end pockets add much-needed compartmentalization — perfect for separating clean from dirty or shoes from clothes, fitting up to a size 12 pair comfortably.

Edgeless Straps, All-Day Comfort
Switch seamlessly to backpack mode with cushy Edgeless straps and a removable foam back panel for comfort when you want it, and a lighter carry when you don’t.
Customers Also Love
Reviews
This is a carousel with slides that contain product images and descriptions. Use Next and Previous buttons to navigate.
Why People Choose TOM BIHN

Travel-Ready Without the Bulk
Every bag is thoughtfully designed for effortless travel.

Effortless Organization, No Matter Your Day
Smart pockets and O-rings keep everything visible and within easy reach.

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.

Effortless Organization, No Matter Your Day
Smart pockets and O-rings keep everything visible and within easy reach.

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.

Effortless Organization, No Matter Your Day
Smart pockets and O-rings keep everything visible and within easy reach.

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.