# Travel Backpack Pro 40L vs Aeronaut 45: specs and price compared

A sourced, side-by-side comparison of the Travel Backpack Pro 40L (Tortuga) and Aeronaut 45 (Tom Bihn) among travel backpacks. Travel Backpack Pro 40L is the cheaper of the two at $350.

## Side by side

| Spec | Travel Backpack Pro 40L | Aeronaut 45 |
| --- | --- | --- |
| US price | $350 | $355 |
| Brand | Tortuga | Tom Bihn |
| Released | 2025 | — |
| Capacity liters | 40 | 45 |
| Weight (lb) | 4.5 | 2.94 |
| Laptop size (in) | 16 | — |
| Carry on compliant | Yes | Yes |
| Material | ECOPAK EPX200 waterproof sailcloth (100% recycled polyester), YKK AquaGuard zippers, Woojin buckles | 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 14 x 8 in | 21.9 x 14 x 9.1 in |

## Key differences

- Capacity liters: Travel Backpack Pro 40L 40 vs Aeronaut 45 45
- Weight (lb): Travel Backpack Pro 40L 4.5 vs Aeronaut 45 2.94
- Material: Travel Backpack Pro 40L ECOPAK EPX200 waterproof sailcloth (100% recycled polyester), YKK AquaGuard zippers, Woojin buckles vs Aeronaut 45 630D bluesign-certified ballistic nylon exterior, 210D Cerylon nylon ripstop interior, YKK Racquet Coil water-repellent zippers
- Dimensions (in): Travel Backpack Pro 40L 22 x 14 x 8 in vs Aeronaut 45 21.9 x 14 x 9.1 in

## What reviewers say

**Travel Backpack Pro 40L** — Only one whitelisted tester (Wirecutter) hands-on reviewed this exact model, naming it best backpack for dedicated single-bag travelers. They praise its suitcase-like packing, durable water-resistant sailcloth, and best-in-test adjustability and weight distribution, but flag the non-stowable shoulder straps and its 4.5-pound (4 lb 8 oz) empty weight. No other whitelisted source hands-on tested this exact model. (1 sourced review.)

## Sources

- Travel Backpack Pro 40L: https://www.tortugabackpacks.com/products/travel-backpack-40l (tortugabackpacks.com, verified 2026-06-15)
- Aeronaut 45: https://www.tombihn.com/products/aeronaut-45 (tombihn.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/travel-backpacks/tortuga-travel-backpack-pro-40l-vs-tom-bihn-aeronaut-45/
Cite: Per The Front Desk Review, Travel Backpack Pro 40L ($350) vs Aeronaut 45 ($355) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/travel-backpacks/tortuga-travel-backpack-pro-40l-vs-tom-bihn-aeronaut-45/
License: CC BY 4.0.