STM Trilogy vs. Peak Design Everyday Backpack Zip
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| STM Trilogy | Feature | Peak Design Everyday Backpack Zip |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | 20L |
| 4 | Opening | 1 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |
| Material | |
| 100% polyester | 400D double poly-coated DWR-impregnated nylon canvas shell |
Peak Design Everyday Backpack Zip
| Capacity | 20 L |
| Weight | 1.55 kg |
| Dimensions | 47×29×16 cm |
| Airline fit | 93% |
| Price | $220 |
Key differences between the STM Trilogy and Peak Design Everyday Backpack Zip
- Opening: Top zip on the STM Trilogy; Clamshell on the Peak Design Everyday Backpack Zip.
- Sternum strap: No on the STM Trilogy; Removable on the Peak Design Everyday Backpack Zip.
Both have: backpack straps, laptop sleeve, built-in organizer, water bottle pockets, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 175 accept both. 3 accept only the STM Trilogy, and 0 accept only the Peak Design Everyday Backpack Zip.
Only the STM Trilogy fits
American Eagle, easyJet, Ravn Alaska.
STM Trilogy vs. Peak Design Everyday Backpack Zip: which should you pack?
The STM Trilogy carries 4L more than the Peak Design Everyday Backpack Zip (24L vs. 20L), while the STM Trilogy is the lighter pack at 0.64kg (vs. 1.55kg). 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 STM Trilogy is the better call.