Material: 210D robic nylon Volume: [small] 50L (3051cu in), [medium] 75L (4576cu in), [large] 95L (5797cu in) Shoulder Strap: yes Closure: zippered Claimed Weight: [small] 1lb 8oz, [medium] 1lb 10oz, [large] 1lb 13oz Don't trust that duffel bag you bought at the outlet store on...