ATD Supply ATD2 vs Solgaard Venture Backpack Medium
The ATD Supply ATD2 is 18L and 1.3kg2.9lb; the Solgaard Venture Backpack Medium is 17L and 1.3kg2.9lb. They weigh the same. The Solgaard Venture Backpack Medium costs $211 less. The ATD Supply ATD2 fits the carry-on limit of 36 of 36 major airlines and the Solgaard Venture Backpack Medium fits 36; under the seat, 7 and 8 of 26.
| Spec | ATD Supply ATD2 | Solgaard Venture Backpack Medium |
|---|---|---|
| Price | $456 | $245Best |
| Volume | 18L | 17L |
| Expands to | 31L | 27L |
| Weight | 1.3kg2.9lb | 1.3kg2.9lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27% | 31%Best |
| Dimensions | 45×25×19cm17.5×10×7.5in | 43×27×18cm17×10.5×7in |
| Laptop | 15" | 16"Best |
| Compartments | n/a | 3 |
| Bottle pockets | n/a | 2 |
| Opening | Roll-top, expandable roll top with Fidlock magnetic buckle, U-shaped back panel zip for top, side and clamshell access | front compartment opens fully |
| Warranty | Lifetime | 2 years |
| Organizer | Yes | Yes |
| Shoe compartment | No | Yes |
| Hydration sleeve | No | No |
| Frame sheet | Removable | No |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | Yes | No |
| Hip belt | Removable | No |
| Sternum strap | Removable | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | Challenge Sailcloth Ecopak EPLX600 waterproof laminate (100% post-consumer recycled polyester), RBC 200 lining, YKK zippers | Shore-Tex recycled ocean-bound plastic fabric |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | ATD Supply ATD2 | Solgaard Venture Backpack Medium |
|---|---|---|---|
| JetBlue Airways | Personal item | Too big | Fits |
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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.