STM Trilogy vs. Briggs & Riley Medium Cargo Backpack
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| STM Trilogy | Feature | Briggs & Riley Medium Cargo Backpack |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | Y |
| N | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | N |
| Inside | ||
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| 100% polyester | 1600D ballistic nylon outer fabric |
Briggs & Riley Medium Cargo Backpack
| Capacity | 27.3 L |
| Weight | 1.2 kg |
| Dimensions | 45.5×34.5×20.5 cm |
| Airline fit | 74% |
| Price | $329 |
Key differences between the STM Trilogy and Briggs & Riley Medium Cargo Backpack
- Passport pocket: No on the STM Trilogy; Yes on the Briggs & Riley Medium Cargo Backpack.
- Luggage passthrough: No on the STM Trilogy; Yes on the Briggs & Riley Medium Cargo Backpack.
- Water bottle pockets: 2 on the STM Trilogy; 1 on the Briggs & Riley Medium Cargo Backpack.
Both have: backpack straps, laptop sleeve, built-in organizer, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 139 accept both. 39 accept only the STM Trilogy, and 0 accept only the Briggs & Riley Medium Cargo Backpack.
Only the STM Trilogy fits
Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, Cayman Airways, China Eastern, easyJet, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Regional Express, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, Xiamen.
STM Trilogy vs. Briggs & Riley Medium Cargo Backpack: which should you pack?
The Briggs & Riley Medium Cargo Backpack carries 3.3000000000000007L more than the STM Trilogy (24L vs. 27.3L), while the STM Trilogy is the lighter pack at 0.64kg (vs. 1.2kg). 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 Briggs & Riley Medium Cargo Backpack; if you want to travel lighter, the STM Trilogy is the better call.