Peak Design
Peak Design Travel Backpack 45L
$299.95
Released 2018
Best Travel Backpacks · head-to-head
Peak Design Travel Backpack 45L vs Aer Travel Pack 3
A sourced, side-by-side comparison. Aer Travel Pack 3 is cheaper at $249. Every spec and price links to its source.
Aer
Aer Travel Pack 3
$249Cheaper
Which is better: the Peak Design Travel Backpack 45L or Aer Travel Pack 3?
The Aer Travel Pack 3 wins 1 of the 1 specs we compare head to head; the other wins 0. The Aer Travel Pack 3 is the cheaper at $249. The Aer Travel Pack 3 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 | Peak Design Travel Backpack 45L | Aer Travel Pack 3 |
|---|---|---|
| US price | $299.95 MSRP, V2 (BTR-45-BK-2), Black | $249 |
| Brand | Peak Design | Aer |
| Released | 2018 | — |
| Capacity liters | 45 | 35 |
| Weight (lb) | 4.55 | 4.12 |
| Laptop size (in) | 16 | 16 |
| Carry on compliant | Yes | Yes |
| Material | 400D recycled nylon canvas, 900D nylon bottom, DWR-coated polyurethane liner | 1680D Cordura ballistic nylon (bluesign approved), YKK zippers, Duraflex hardware |
| Warranty years | 99 | 99 |
| Dimensions (in) | 22 x 13 x 9.5 in | 21.5 x 13 x 9 in |
| Release | 2018 | — |
Sources — Peak Design Travel Backpack 45L: peakdesign.com (verified 2026-06-15). Aer Travel Pack 3: aersf.com (verified 2026-06-15).
What's the difference between the Peak Design Travel Backpack 45L and Aer Travel Pack 3?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Capacity liters: Peak Design Travel Backpack 45L 45 vs Aer Travel Pack 3 35
- Weight (lb): Peak Design Travel Backpack 45L 4.55 vs Aer Travel Pack 3 4.12
- Material: Peak Design Travel Backpack 45L 400D recycled nylon canvas, 900D nylon bottom, DWR-coated polyurethane liner vs Aer Travel Pack 3 1680D Cordura ballistic nylon (bluesign approved), YKK zippers, Duraflex hardware
- Dimensions (in): Peak Design Travel Backpack 45L 22 x 13 x 9.5 in vs Aer Travel Pack 3 21.5 x 13 x 9 in