Surfun Waterproof Dry Bag Dry Sack with Shoulder Strap for Camping Kayaking Hiking Boating Rafting Swimming Fishing Snowboarding Backpacking and Floating 100% waterproof Dry Sack with a fully adjustable and removable strap. Made of Heavy duty and durable Vinyl for rough usage. Protects contents from dust , dirt, sand and water,meanwhile, Suitable for quick submersion and Floats safely if dropped in water