Exped Summit Lite 25 vs Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L
The Exped Summit Lite 25 is 25L and 0.34kg0.7lb; the Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L is 25L and 0.27kg0.6lb. The Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L is 0.07kg0.2lb lighter. The Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L costs $39.96000000000001 less. The Exped Summit Lite 25 fits the carry-on limit of 36 of 36 major airlines and the Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L fits 36; under the seat, 0 and 0 of 26.
| Spec | Exped Summit Lite 25 | Waterfly TransformerX 6.0 UltraLight Packable Backpack 25L |
|---|---|---|
| Price | $69.95 | $29.99Best |
| Volume | 25L | 25L |
| Weight | 0.34kg0.7lb | 0.27kg0.6lbBest |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 50×27.9×19.1cm19.5×11×7.5in | 47×31×17cm18.5×12×6.5in |
| Laptop | no laptop sleeve | n/a |
| Compartments | 1 | 2 |
| Bottle pockets | 1 | 2 |
| Opening | asymmetrical long zip | Zippered main compartment |
| Warranty | 5 years | 10 years |
| Organizer | No | No |
| Shoe compartment | No | No |
| Hydration sleeve | Yes | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | Yes | No |
| Sternum strap | Removable | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | Recycled 100D Robic triple ripstop nylon UTS (1,500 mm water column), OEKO-TEX 100 certified, PFC free | Eco-friendly nylon, polyester lining |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
Both bags pass and fail the same airline size limits.
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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.