--- url: "https://onebag.travel/compare/lyrxmv0xhq/a-35l-travel-backpack/n8ttb1wbeu/cotopaxi-allpa-travel-pack-42l/" title: "A 35L Travel Backpack vs Cotopaxi Allpa Travel Pack 42L" description: "A 35L Travel Backpack vs Cotopaxi Allpa Travel Pack 42L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side." source: "https://onebag.travel/compare/lyrxmv0xhq/a-35l-travel-backpack/n8ttb1wbeu/cotopaxi-allpa-travel-pack-42l/" --- 1. [Home](https://onebag.travel/) 2. [Carry-On Travel Backpacks](https://onebag.travel/carryons/) 3. A 35L Travel Backpack vs. Cotopaxi Allpa Travel Pack 42L # A 35L Travel Backpack vs. Cotopaxi Allpa Travel Pack 42L Two carry-on travel backpacks, compared spec for spec. ## [A 35L Travel Backpack](https://onebag.travel/carryon/lyrxmv0xhq/a-35l-travel-backpack/) by [Standard Luggage Co.](https://onebag.travel/carryons/?brands=Standard Luggage Co.) ![Front facing view of the A 35L Travel Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/carryons/oossgvggttei0lewrrhz)
Capacity35 L
Weight1.7 kg
Dimensions55×35×20 cm
Airline fit86%
Price$189
## Feature by feature | A 35L Travel Backpack | Feature | Cotopaxi Allpa Travel Pack 42L | | --- | --- | --- | | Storage | | N | Compression | N | | None | Expanded Capacity | None | | 1 | Opening | 1 | | Y | Passport | front | | Y | Passthrough | Y | | Carry | | hideable | Backpack | hideable | | hideable | Hip Belt | hideable | | hideable | Sternum Strap | Y | | Inside | | 17in | Laptop | 15in | | 2 | Main Compartments | 3 | | Y | Organizer | Y | | Outside | | × | Hard Shell | × | | N | Rain-fly | N | | 2 | Water Bottle Holder | 1, side | | Y | Water Resistant | Y |
Material
1680 denier high tenacity ballistic nylon100% recycled 840D TPU-coated nylon
## [Cotopaxi Allpa Travel Pack 42L](https://onebag.travel/carryon/n8ttb1wbeu/cotopaxi-allpa-travel-pack-42l/) by [Cotopaxi](https://onebag.travel/carryons/?brands=Cotopaxi) ![Front facing view of the Cotopaxi Allpa Travel Pack 42L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1621552508/carryons/Cotopaxi_Allpa_Travel_Pack_42L_e0l0ab.webp)
Capacity42 L
Weight1.4 kg
Dimensions56×36×27 cm
Airline fit2%
Price$250
## Key differences between the A 35L Travel Backpack and Cotopaxi Allpa Travel Pack 42L - **Passport pocket:** Yes on the A 35L Travel Backpack; Front on the Cotopaxi Allpa Travel Pack 42L. - **Sternum strap:** Hideable on the A 35L Travel Backpack; Yes on the Cotopaxi Allpa Travel Pack 42L. - **Laptop sleeve:** 17in on the A 35L Travel Backpack; 15in on the Cotopaxi Allpa Travel Pack 42L. - **Main compartments:** 2 on the A 35L Travel Backpack; 3 on the Cotopaxi Allpa Travel Pack 42L. - **Water bottle pockets:** 2 on the A 35L Travel Backpack; 1, side on the Cotopaxi Allpa Travel Pack 42L. Both have: luggage passthrough, backpack straps, hip belt, 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. 4 accept both. 158 accept only the A 35L Travel Backpack, and 0 accept only the Cotopaxi Allpa Travel Pack 42L. ### Only the A 35L Travel Backpack fits Adria Airways, Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air Europa, Air France, Air India, Air Koryo, Air Macau, Air Malta, Air Mauritius, Air New Zealand, Air Nostrum, Air Serbia, Air Seychelles, Air Tahiti Nui, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Azul Linhas, Bahamasair, Bangkok Airways, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Caribbean Airlines, Cathay Pacific, Cebu Pacific, China Airlines, China Eastern, China Southern, CommutAir, Conviasa, Copa Airlines, Croatia Air, Cubana de Aviacion, Czech Airlines, Delta Airlines, Dragonair, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Garuda Indonesia, Gol Linhas Aereas, Hainan Airlines, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Korean Air, Kulula, Kuwait Air, LATAM , LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Onur Air, Pakistan International, Peach, PenAir, Philippine Airlines, Porter Airlines, Qantas Airways, Republic Airways, Royal Air Morocco, Royal Brunei Airlines, Ryanair, S7, SAS Scandinavian, Saudi Arabian Airlines, Shandong Airlines, Shenzhen Airlines, Sichuan Airlines, SilkAir, Silver Airways, Singapore Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, SpiceJet, Spirit Airlines, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAAG Angola, TAM Airlines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Ural Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WOW Airlines, Xiamen. ## A 35L Travel Backpack vs. Cotopaxi Allpa Travel Pack 42L: which should you pack? The **Cotopaxi Allpa Travel Pack 42L** carries 7L more than the **A 35L Travel Backpack** (35L vs. 42L), while the **Cotopaxi Allpa Travel Pack 42L** is the lighter pack at 1.4kg (vs. 1.7kg). For carry-on flexibility, the **A 35L Travel Backpack** fits 86% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cotopaxi Allpa Travel Pack 42L; if you want to travel lighter, the Cotopaxi Allpa Travel Pack 42L is the better call.