WaterproofOur waterproof bag is made of thickened 500D mesh step waterproof fabric.Welded seams water bucket bag,beach drifting swimming bag, suitable for outdoor use Roll Top BackpackWaterproof backpack 25l,roll top,fold three rolls,front and back Velcro attached together,the roll top can be attached down to the sides of the bag,giving you flexibility Durable and LightOur dry sack is durable and easy to clean,Its net weight is only 1.05lbs.It can be folded to save space when not in use. Widely Used These dry bag set can be used in occasions like beach,travel,sports,fishing,boating,kayaking,rafting,camping,hiking,paddleboarding,backpacking,swimming,snorkeling,canoeing,biking,skiing,surfing,diving,sailing,river boat or even Home organizing,etc. Strong Buckleour dry bag has professional quick-release buckle that can bear more times use, which is firm and secure.When exercising outdoors on water, it is a good choice to put your clothes,phone,wallet, keys, charger or cosmetics, in this dry backpack to prevent personal items from getting wet