Ryu Flex Pack 20L vs. Kathmandu Cotinga Kid's Pack
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Ryu Flex Pack 20L | Feature | Kathmandu Cotinga Kid's Pack |
|---|---|---|
| Storage | ||
| N | Compression | Y |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | N |
| Inside | ||
| 15in | Laptop | N |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| 100% nylon with silicone coating and Polygiene® finish | 100% Polyester |
Kathmandu Cotinga Kid's Pack
| Capacity | 20 L |
| Weight | 0.42 kg |
| Dimensions | 41×27×20.5 cm |
| Airline fit | 76% |
| Price | $60 |
Key differences between the Ryu Flex Pack 20L and Kathmandu Cotinga Kid's Pack
- Compression straps: No on the Ryu Flex Pack 20L; Yes on the Kathmandu Cotinga Kid's Pack.
- Sternum strap: Removable on the Ryu Flex Pack 20L; No on the Kathmandu Cotinga Kid's Pack.
- Laptop sleeve: 15in on the Ryu Flex Pack 20L; No on the Kathmandu Cotinga Kid's Pack.
Both have: backpack straps, built-in organizer, 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. 142 accept both. 35 accept only the Ryu Flex Pack 20L, and 2 accept only the Kathmandu Cotinga Kid's Pack.
Only the Ryu Flex Pack 20L fits
Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, easyJet, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, 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), Volotea, Xiamen.
Only the Kathmandu Cotinga Kid's Pack fits
Great Lakes Airlines, Gulf Air.
Ryu Flex Pack 20L vs. Kathmandu Cotinga Kid's Pack: which should you pack?
The Ryu Flex Pack 20L carries the same capacity as the Kathmandu Cotinga Kid's Pack (20L vs. 20L), and the two are closely matched on weight. For carry-on flexibility, the Ryu Flex Pack 20L fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Ryu Flex Pack 20L; if you want to travel lighter, the Kathmandu Cotinga Kid's Pack is the better call.