Gossamer Gear Mariposa vs. Peak Design Outdoor Backpack 45L
Two carry-on travel backpacks, compared spec for spec.
Gossamer Gear Mariposa
| Capacity | 36 L |
| Weight | 0.9 kg |
| Dimensions | 56×28×14 cm |
| Airline fit | 47% |
| Price | $315 |
Feature by feature
| Gossamer Gear Mariposa | Feature | Peak Design Outdoor Backpack 45L |
|---|---|---|
| Storage | ||
| 2 | Compression | N |
| None | Expanded Capacity | 45L |
| 0 | Opening | 1 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| N | Laptop | 16in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 4, side |
| Y | Water Resistant | Y |
| Material | |
| 100D & 210D Recycled Robic Nylon | Ultralight Terra Shell™ 210D ripstop |
Peak Design Outdoor Backpack 45L
| Capacity | 35 L |
| Weight | 1.6 kg |
| Dimensions | 56×31×17 cm |
| Airline fit | 47% |
| Price | $330 |
Key differences between the Gossamer Gear Mariposa and Peak Design Outdoor Backpack 45L
- Compression straps: 2 on the Gossamer Gear Mariposa; No on the Peak Design Outdoor Backpack 45L.
- Opening: Other on the Gossamer Gear Mariposa; Clamshell on the Peak Design Outdoor Backpack 45L.
- Laptop sleeve: No on the Gossamer Gear Mariposa; 16in on the Peak Design Outdoor Backpack 45L.
- Water bottle pockets: 2, side on the Gossamer Gear Mariposa; 4, side on the Peak Design Outdoor Backpack 45L.
Both have: backpack straps, hip belt, sternum strap, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 88 accept both. 1 accept only the Gossamer Gear Mariposa, and 0 accept only the Peak Design Outdoor Backpack 45L.
Only the Gossamer Gear Mariposa fits
Great Lakes Airlines.
Gossamer Gear Mariposa vs. Peak Design Outdoor Backpack 45L: which should you pack?
The Gossamer Gear Mariposa carries 1L more than the Peak Design Outdoor Backpack 45L (36L vs. 35L), while the Gossamer Gear Mariposa is the lighter pack at 0.9kg (vs. 1.6kg). For carry-on flexibility, the Gossamer Gear Mariposa fits 47% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gossamer Gear Mariposa; if you want to travel lighter, the Gossamer Gear Mariposa is the better call.