DEFY Menace Backpack 2.0 vs GORUCK Double Bullet Ruck 18L
The DEFY Menace Backpack 2.0 is 18L and 1.36kg3lb; the GORUCK Double Bullet Ruck 18L is 18L and 1.47kg3.2lb. The DEFY Menace Backpack 2.0 is 0.11kg0.2lb lighter. The GORUCK Double Bullet Ruck 18L costs $64 less. The DEFY Menace Backpack 2.0 fits the carry-on limit of 36 of 36 major airlines and the GORUCK Double Bullet Ruck 18L fits 36; under the seat, 7 and 0 of 26.
| Spec | DEFY Menace Backpack 2.0 | GORUCK Double Bullet Ruck 18L |
|---|---|---|
| Price | $299 | $235Best |
| Volume | 18L | 18L |
| Weight | 1.36kg3lbBest | 1.47kg3.2lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27%Best | 0% |
| Dimensions | 44.5×27.9×14cm17.5×11×5.5in | 47×29.8×17.8cm18.5×11.5×7in |
| Laptop | 16" | sleeve, size not published |
| Compartments | n/a | 2 |
| Opening | Top-loading, top-loading main compartment under a flap with AustriAlpin COBRA buckle | Clamshell, Opens flat |
| Warranty | No fixed term | Lifetime |
| Organizer | No | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | Yes |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | 1050D water-resistant MIL-SPEC ballistic nylon exterior, 1000D water-resistant silver CORDURA lining, YKK AquaGuard zippers | 1000D Cordura, 210D Cordura back panel and shoulder straps |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | DEFY Menace Backpack 2.0 | GORUCK Double Bullet Ruck 18L |
|---|---|---|---|
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Volaris | Personal item | 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.