Features Provides scent-free storage as an air-tight container Watertight Sil-Nylon construction (silicone treated nylon) Hypalon Top Strap for water-tight closure when rolled and buckled Seam taped interior construction Dimensions (Bottom Diam. x Height x Strap Width) : SM: 7in x 16in x 5/8in MD: 9in x 18in x 5/8in LG: 12in x 23in x 5/8in Weights (SM, MD, LG): 2.5 oz, 3.5 oz, 4.5 oz Medium and Large Roll Top Stuff sacks are designed to fit inside the main compartment of MD and LG duffles: 1 MD Roll Top per MD duffle 2 MD Roll Tops or 1 LG Roll Top per LG Duffle This is to allow for quick loading and transport of scent-free gear inside roll tops Not intended for full submersion or in boating activities. This product is designed to provide waterproof organization when hunting with a backpack. Featured in Dry Earth Nalgene water bottle for size comparison only. Not included! Materials 100% Nylon