Kathmandu Solus Pack 20 vs. Boundary Supply Rennen Recycled Daypack
Two carry-on travel backpacks, compared spec for spec.
Kathmandu Solus Pack 20
| Capacity | 20 L |
| Weight | 0.42 kg |
| Dimensions | 47×28×19 cm |
| Airline fit | 93% |
| Price | $60 |
Feature by feature
| Kathmandu Solus Pack 20 | Feature | Boundary Supply Rennen Recycled Daypack |
|---|---|---|
| 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 | N |
| Inside | ||
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 1 |
| N | Water Resistant | Y |
| Material | |
| 100% Polyester | RE-3™ 600/500D Eco Cordura® |
Boundary Supply Rennen Recycled Daypack
| Capacity | 22 L |
| Weight | 0.9 kg |
| Dimensions | 46×28×18 cm |
| Airline fit | 95% |
| Price | $140 |
Key differences between the Kathmandu Solus Pack 20 and Boundary Supply Rennen Recycled Daypack
- Water bottle pockets: No on the Kathmandu Solus Pack 20; 1 on the Boundary Supply Rennen Recycled Daypack.
- Water resistant: No on the Kathmandu Solus Pack 20; Yes on the Boundary Supply Rennen Recycled Daypack.
Both have: backpack straps, laptop sleeve.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 176 accept both. 0 accept only the Kathmandu Solus Pack 20, and 3 accept only the Boundary Supply Rennen Recycled Daypack.
Only the Boundary Supply Rennen Recycled Daypack fits
American Eagle, easyJet, Ravn Alaska.
Kathmandu Solus Pack 20 vs. Boundary Supply Rennen Recycled Daypack: which should you pack?
The Boundary Supply Rennen Recycled Daypack carries 2L more than the Kathmandu Solus Pack 20 (20L vs. 22L), while the Kathmandu Solus Pack 20 is the lighter pack at 0.42kg (vs. 0.9kg). For carry-on flexibility, the Boundary Supply Rennen Recycled Daypack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Rennen Recycled Daypack; if you want to travel lighter, the Kathmandu Solus Pack 20 is the better call.