Kathmandu Katabatic 28L Pack vs. Ortlieb Atrack ST
Two carry-on travel backpacks, compared spec for spec.
Kathmandu Katabatic 28L Pack
| Capacity | 28 L |
| Weight | 0.906 kg |
| Dimensions | 52×29×28 cm |
| Airline fit | 14% |
| Price | $120 |
Feature by feature
| Kathmandu Katabatic 28L Pack | Feature | Ortlieb Atrack ST |
|---|---|---|
| Storage | ||
| Y | Compression | Y |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | Y |
| Y | Sternum Strap | Y |
| Inside | ||
| N | Laptop | N |
| 1 | Main Compartments | 1 |
| Y | Organizer | |
| Outside | ||
| × | Hard Shell | × |
| optional | Rain-fly | N |
| 2 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |
| Material | |
| 100% Polyester | PS33 |
Ortlieb Atrack ST
| Capacity | 25 L |
| Weight | 1.41 kg |
| Dimensions | 56×26×25 cm |
| Airline fit | 27% |
| Price | $250 |
Key differences between the Kathmandu Katabatic 28L Pack and Ortlieb Atrack ST
- Rain cover: Optional on the Kathmandu Katabatic 28L Pack; No on the Ortlieb Atrack ST.
Both have: compression straps, backpack straps, hip belt, 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. 27 accept both. 0 accept only the Kathmandu Katabatic 28L Pack, and 24 accept only the Ortlieb Atrack ST.
Only the Ortlieb Atrack ST fits
Aegean Airlines, Air Astana, Air Nostrum, Atlas Global, British Airways, Conviasa, Copa Airlines, EL AL, Finnair, Frontier Airlines, Great Lakes Airlines, Iran Aseman Air, Jet2, Kuwait Air, Middle East Airlines, Monarch Airlines, Onur Air, PenAir, Southwest Airlines, Spirit Airlines, Thai Airways, Travel Service Airlines, Uzbekistan Air, WOW Airlines.
Kathmandu Katabatic 28L Pack vs. Ortlieb Atrack ST: which should you pack?
The Kathmandu Katabatic 28L Pack carries 3L more than the Ortlieb Atrack ST (28L vs. 25L), while the Kathmandu Katabatic 28L Pack is the lighter pack at 0.906kg (vs. 1.41kg). For carry-on flexibility, the Ortlieb Atrack ST fits 27% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Kathmandu Katabatic 28L Pack; if you want to travel lighter, the Kathmandu Katabatic 28L Pack is the better call.