Lightweight Compact and Durable: Made from ripstop tarpaulin with sturdy welded seam which is designed for years usage, tear, rip and puncture proof. Perfect for almost any extreme adventure you can imagine.Waterproof Guarantee: Solid roll-top closure system provides secure watertight seal. Keeps your gear dry in any wet situation where the bag is not fully submerged. Protects your valuables from water, snow, mud and sand.Easy Operation and Cleaning: Just put your gear in bag, grab top woven tape and roll down tightly 3 to 5 times and then plug buckle to complete seal, whole process is very quick. Dry sack is easy to wipe clean due to its smooth surface.Multiple Sizes: 5 Liter to 40 Liter to meet your demands on different occasions. 5L, 10L include one adjustable and removable shoulder strap for cross-body, 20L, 30L, 40L include two straps for backpack style carrying.Versatility: The dry sack can float on water after being rolled and buckled, so you can track your gears easily. Perfect for boating, kayaking, paddling, sailing, canoeing, surfing or having fun on the beach. A nice Holiday Gift for families and friends.