Leader Accessories New Waterproof and Compression Lightweight Dry Sack Bag 8L/12L/15L/20L LIGHTWEIGHT & DURABLE DESIGN:Our lightweight dry sacks are 65% lighter than common dry sacks at least. They are made of 160 denier nylon Taslan (Luftex), which is one of lightweight and toughest nylon fabrics available. 100% WATERPROOF:Our bags are suitable for quick submersion, while you are kayaking, travelling, boating, white water rafting, camping, hiking, hunting, skiing, snowboarding,our dry bags will protect your valuables from dirt, dust,sand and water. DURABLE:Made of high performance waterproof fabric and fully seam sealed,reinforced stitching on all stress points FOUR COLORS AND SIX SIZES:Black/Orange/Yellow/Olive,2L/4L/8L/12L/15L/20L RETURN AND MONEY BACK GUARANTEE:We accept return within 30 days,if you don't like it and it is still new,you can return it for a full refund. To ensure a watertight seal, tightly roll down the top of the bag a minimum of 3-5 times and connect the buckle. The dry bag is not intended for full submersion,it is suitable for quick submersion,but not long time in the water. To ensure it is waterproof,you could do a small test in the water before using the bag.