STM Trilogy vs. Arc'teryx Mantis 26 Backpack
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| STM Trilogy | Feature | Arc'teryx Mantis 26 Backpack |
|---|---|---|
| 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 | |
| 1 | Main Compartments | 1 |
| Y | Organizer | |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | |
| 2 | Water Bottle Holder | |
| Y | Water Resistant | Y |
| Material | |
| 100% polyester | Recycled Polyester |
Arc'teryx Mantis 26 Backpack
| Capacity | 26 L |
| Weight | 1.84 kg |
| Dimensions | 48×28×25 cm |
| Airline fit | 40% |
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 75 accept both. 103 accept only the STM Trilogy, and 1 accept only the Arc'teryx Mantis 26 Backpack.
Only the STM Trilogy fits
Aer Lingus, Air Asia, Air Baltic, Air Canada, Air China, Air Macau, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, American Eagle, Asiana Airlines, ATA Airlines, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Delta Airlines, Dragonair, easyJet, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, EVA Air, Fiji Airways, Flair Air, flybe, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, Icelandair, InselAir, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kulula, Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Porter Airlines, Qantas Airways, Ravn Alaska, Regional Express, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, TUI, Turkish Airlines, Ukraine International, United Airlines, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Virgin Australia, Volotea, WestJet, Xiamen.
Only the Arc'teryx Mantis 26 Backpack fits
Great Lakes Airlines.
STM Trilogy vs. Arc'teryx Mantis 26 Backpack: which should you pack?
The Arc'teryx Mantis 26 Backpack carries 2L more than the STM Trilogy (24L vs. 26L), while the STM Trilogy is the lighter pack at 0.64kg (vs. 1.84kg). 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 Arc'teryx Mantis 26 Backpack; if you want to travel lighter, the STM Trilogy is the better call.