Hypergear dry bag provides waterproof to your belongings as well as it floats on water to avoid lost.? Suitable for outdoor activities? Available in 6 sizes, 5 Liter, 10 Liter, 15 liter, 20 Liter, 30 Liter & 40 Liter? Waterproof? Floats safely if dropped in water. (Class 3 Waterproof)? Durable, wipe-clean and easy to store away? Heavy duty and durable materials for rough usage? Supplied with 2 adjustable shoulder strap for dual usability as sling bag or back pack