Cotopaxi Allpa 28 vs. Boundary Supply Arris Pack
Two carry-on travel backpacks, compared spec for spec.
Cotopaxi Allpa 28
| Capacity | 28 L |
| Weight | 1 kg |
| Dimensions | 48×30×23 cm |
| Airline fit | 73% |
| Price | $200 |
Feature by feature
| Cotopaxi Allpa 28 | Feature | Boundary Supply Arris Pack |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| side | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| hideable | Backpack | Y |
| hideable | Hip Belt | Y |
| Y | Sternum Strap | Y |
| Inside | ||
| 15in | Laptop | 17in |
| 4 | Main Compartments | 4 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 100% recycled 840D TPU-coated nylon | 400D TPU Nylon |
Boundary Supply Arris Pack
| Capacity | 35 L |
| Weight | 2 kg |
| Dimensions | 56×33×23 cm |
| Airline fit | 47% |
| Price | $400 |
Key differences between the Cotopaxi Allpa 28 and Boundary Supply Arris Pack
- Passport pocket: Side on the Cotopaxi Allpa 28; Top on the Boundary Supply Arris Pack.
- Backpack straps: Hideable on the Cotopaxi Allpa 28; Yes on the Boundary Supply Arris Pack.
- Hip belt: Hideable on the Cotopaxi Allpa 28; Yes on the Boundary Supply Arris Pack.
- Laptop sleeve: 15in on the Cotopaxi Allpa 28; 17in on the Boundary Supply Arris Pack.
Both have: luggage passthrough, sternum strap, 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. 88 accept both. 50 accept only the Cotopaxi Allpa 28, and 0 accept only the Boundary Supply Arris Pack.
Only the Cotopaxi Allpa 28 fits
Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Canada, Air Caraibes, Air France, Air India, Air Mauritius, All Nipon Airways, ANA, Austrian, Azerbaijan Airlines, Boliviana de Aviacion, Brussels Airlines, Czech Airlines, Ethiopian Airlines, Etihad Airways, Eurowings, Fiji Airways, Flair Air, Gol Linhas Aereas, Iberia, Indigo, Interjet, Iran Air, Japan Airlines, Jet Airways, Kenya Airways, KLM, LATAM , LOT Polish, Lufthansa, Mahan Air, Mesa Airlines, Norwegian, Oman Air, Peach, Porter Airlines, Qatar Airways, Regional Express, Royal Jordanian, SAS Scandinavian, Scoot, Sky Airlines, Swiss Int'l Air Lines, Tiger Airways, Turkish Airlines, Virgin Australia, WestJet.
Cotopaxi Allpa 28 vs. Boundary Supply Arris Pack: which should you pack?
The Boundary Supply Arris Pack carries 7L more than the Cotopaxi Allpa 28 (28L vs. 35L), while the Cotopaxi Allpa 28 is the lighter pack at 1kg (vs. 2kg). For carry-on flexibility, the Cotopaxi Allpa 28 fits 73% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Arris Pack; if you want to travel lighter, the Cotopaxi Allpa 28 is the better call.