Code of Bell X-PAK EVO - Sling Pack vs. STM Trilogy

Two carry-on travel backpacks, compared spec for spec.

Code of Bell X-PAK EVO - Sling Pack

Front facing view of the Code of Bell X-PAK EVO - Sling Pack
Capacity23 L
Weight0.9 kg
Dimensions45×27×25 cm
Airline fit41%
Price$240

Feature by feature

Code of Bell X-PAK EVO - Sling PackFeatureSTM Trilogy
Storage
4 Compression N
11L Expanded Capacity None
0 Opening 4
back Passport N
N Passthrough N
Carry
optional Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
15in Laptop 15in
6 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 2
Y Water Resistant Y
Material
RE/COR RN66 100% recycled nylon100% polyester

STM Trilogy

by Stm
Front facing view of the STM Trilogy
Capacity24 L
Weight0.64 kg
Dimensions46×30×16 cm
Airline fit94%
Price$80

Key differences between the Code of Bell X-PAK EVO - Sling Pack and STM Trilogy

Both have: 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. 76 accept both. 2 accept only the Code of Bell X-PAK EVO - Sling Pack, and 102 accept only the STM Trilogy.

Only the Code of Bell X-PAK EVO - Sling Pack fits

Great Lakes Airlines, Gulf Air.

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, 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.

Code of Bell X-PAK EVO - Sling Pack vs. STM Trilogy: which should you pack?

The STM Trilogy carries 1L more than the Code of Bell X-PAK EVO - Sling Pack (23L vs. 24L), while the STM Trilogy is the lighter pack at 0.64kg (vs. 0.9kg). 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.