BAGSMART Cloud 20L Backpack vs Rab Protium 20L Day Pack
The BAGSMART Cloud 20L Backpack is 20L and 1kg2.2lb; the Rab Protium 20L Day Pack is 20L and 1kg2.2lb. They weigh the same. The BAGSMART Cloud 20L Backpack costs $95.01 less. The BAGSMART Cloud 20L Backpack fits the carry-on limit of 36 of 36 major airlines and the Rab Protium 20L Day Pack fits 31; under the seat, 0 and 0 of 26.
| Spec | BAGSMART Cloud 20L Backpack | Rab Protium 20L Day Pack |
|---|---|---|
| Price | $74.99Best | $170 |
| Volume | 20L | 20L |
| Expands to | 23L | n/a |
| Weight | 1kg2.2lb | 1kg2.2lb |
| Carry-on compliance | 100%Best | 86% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 46.5×34×14.5cm18.5×13.5×5.5in | 52×28×22cm20.5×11×8.5in |
| Laptop | 15" | n/a |
| Opening | flap with full-length side zip | Zipped entry |
| Warranty | 1 year | Lifetime |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | Yes |
| MOLLE | No | No |
| Hip belt | No | Yes |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Material | Water-repellent 300D polyester (spec table lists a PVC exterior); polyester interior | n/a |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | BAGSMART Cloud 20L Backpack | Rab Protium 20L Day Pack |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| Qatar Airways | Carry-on | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| Vueling | Carry-on | Fits | Too big |
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Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.