STM Haven vs. Ryu Flex Pack 20L
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| STM Haven | Feature | Ryu Flex Pack 20L |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 5 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| Polyester | 100% nylon with silicone coating and Polygiene® finish |
Key differences between the STM Haven and Ryu Flex Pack 20L
- Sternum strap: No on the STM Haven; Removable on the Ryu Flex Pack 20L.
- Main compartments: 5 on the STM Haven; 1 on the Ryu Flex Pack 20L.
- Water bottle pockets: No on the STM Haven; 1 on the Ryu Flex Pack 20L.
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. 174 accept both. 2 accept only the STM Haven, and 3 accept only the Ryu Flex Pack 20L.
Only the STM Haven fits
Air Niugini, Great Lakes Airlines.
Only the Ryu Flex Pack 20L fits
American Eagle, easyJet, Ravn Alaska.
STM Haven vs. Ryu Flex Pack 20L: which should you pack?
The STM Haven carries the same capacity as the Ryu Flex Pack 20L (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 STM Haven; if you want to travel lighter, the STM Haven is the better call.