Patagonia Arbor Zip Pack 22L vs. STM Trilogy
Two carry-on travel backpacks, compared spec for spec.
Patagonia Arbor Zip Pack 22L
| Capacity | 22 L |
| Weight | 0.48 kg |
| Dimensions | 49×31×13 cm |
| Airline fit | 91% |
| Price | $89 |
Feature by feature
| Patagonia Arbor Zip Pack 22L | Feature | STM Trilogy |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | N |
| Inside | ||
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| N | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |
| Material | |
| 600-denier 100% recycled polyester, 200-denier 100% recycled polyester | 100% polyester |
Key differences between the Patagonia Arbor Zip Pack 22L and STM Trilogy
- Built-in organizer: No on the Patagonia Arbor Zip Pack 22L; Yes on the STM Trilogy.
- Water bottle pockets: 1 on the Patagonia Arbor Zip Pack 22L; 2 on the STM Trilogy.
Both have: backpack straps, laptop sleeve, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 0 accept only the Patagonia Arbor Zip Pack 22L, and 6 accept only the STM Trilogy.
Only the STM Trilogy fits
Air Niugini, American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.
Patagonia Arbor Zip Pack 22L vs. STM Trilogy: which should you pack?
The STM Trilogy carries 2L more than the Patagonia Arbor Zip Pack 22L (22L vs. 24L), while the Patagonia Arbor Zip Pack 22L is the lighter pack at 0.48kg (vs. 0.64kg). For carry-on flexibility, the STM Trilogy fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Trilogy; if you want to travel lighter, the Patagonia Arbor Zip Pack 22L is the better call.