Description: Tough and super light fabric, portable and durable Roll top compression sealing with clip closure system, ensuring the maximum level of waterproof effect Normally fold 3-5 times can get a perfect waterproof effect, you can fold more times if don’t have much stuffs to put in Ideal for camping, fishing, traveling, canoeing, hiking, backpacking or other outdoor activities Specification: Material: 20D silicone coated nylon Usage: Put your stuffs into the bag, fold the bag mouth three times around the hard plastic, and then put on the buckle 7L Dry Bag Size: S (approx 41.5*18*11cm / 16.3*7.1*4.3 inch) 12L Dry Bag Size: M (approx 50*20*13.5cm / 19.7*7.9*5.3 inch) 18L Dry Bag Size: L (approx 57*21.5*15cm / 22.4*8.5*5.9 inch) 25L Dry BagSize: XL (approx 63*24*18.5cm / 24.8*9.4*7.3 inch) Package Includes: 1 x Waterproof storage bag Note: Please do the waterproof test and check carefully before use, especially the sealing top and around part, to ensure it didn’t get damaged Remember to check the corners and the sealing part after use, avoid strong shocks and scratches, don't persistent use it at high temperatures After use this bag in water, pls wipe the water on bag surface before take out your stuffs, to avoid residual moisture into the waterproof bag Suggested you to pulls back and forth before folding, you’d better fold more than 4 times Please clip outward, don’t clip inward