Cotopaxi
Cotopaxi Allpa 35L Travel Pack
$229Cheaper
Best Travel Backpacks · head-to-head
Cotopaxi Allpa 35L Travel Pack vs Tom Bihn Aeronaut 45
A sourced, side-by-side comparison. Cotopaxi Allpa 35L Travel Pack is cheaper at $229. Every spec and price links to its source.
Tom Bihn
Tom Bihn Aeronaut 45
$355
Which is better: the Cotopaxi Allpa 35L Travel Pack or Tom Bihn Aeronaut 45?
The Cotopaxi Allpa 35L Travel Pack wins 1 of the 1 specs we compare head to head; the other wins 0. The Cotopaxi Allpa 35L Travel Pack is the cheaper at $229. The Cotopaxi Allpa 35L Travel Pack both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Cotopaxi Allpa 35L Travel Pack |  Tom Bihn Aeronaut 45 |
|---|---|---|
| US price | $229 MSRP; REI currently lists $230 | $355 |
| Brand | Cotopaxi | Tom Bihn |
| Released | — | — |
| Capacity liters | 35 | 45 |
| Weight (lb) | 2.93 | 2.94 |
| Laptop size (in) | 15 | — |
| Carry on compliant | No | Yes |
| Material | 100% recycled 840D TPU-coated nylon, 840D ballistic ripstop nylon bottom, recycled ripstop polyester lining | 630D bluesign-certified ballistic nylon exterior, 210D Cerylon nylon ripstop interior, YKK Racquet Coil water-repellent zippers |
| Warranty years | 99 | 99 |
| Dimensions (in) | 22 x 12 x 10 in | 21.9 x 14 x 9.1 in |
| Release | — | — |
Sources — Cotopaxi Allpa 35L Travel Pack: cotopaxi.com (verified 2026-10-20). Tom Bihn Aeronaut 45: tombihn.com (verified 2026-10-20).
What's the difference between the Cotopaxi Allpa 35L Travel Pack and Tom Bihn Aeronaut 45?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Capacity liters: Cotopaxi Allpa 35L Travel Pack 35 vs Tom Bihn Aeronaut 45 45
- Weight (lb): Cotopaxi Allpa 35L Travel Pack 2.93 vs Tom Bihn Aeronaut 45 2.94
- Carry on compliant: Cotopaxi Allpa 35L Travel Pack false vs Tom Bihn Aeronaut 45 true
- Material: Cotopaxi Allpa 35L Travel Pack 100% recycled 840D TPU-coated nylon, 840D ballistic ripstop nylon bottom, recycled ripstop polyester lining vs Tom Bihn Aeronaut 45 630D bluesign-certified ballistic nylon exterior, 210D Cerylon nylon ripstop interior, YKK Racquet Coil water-repellent zippers
- Dimensions (in): Cotopaxi Allpa 35L Travel Pack 22 x 12 x 10 in vs Tom Bihn Aeronaut 45 21.9 x 14 x 9.1 in