[High Quality] Made of high quality materials,. The pu coating, full-line pressure glue process and professional waterproof roller design ensure that the items in the bag stay dry. Lightweight, waterproof and tear resistant, smooth surface, reinforced seams to prevent water ingress [5 capacity sizes] 1.5L+2.5l+3L+3.5l+ 5L + 8L, can hold items of different sizes for all drying needs [easy to carry] the bag is lightweight and can be compressed into a small size, surface water droplets have no good gliding properties and not easy to get wet [easy to use] the roll-top closure offers an adjustable feature to securely seal the device in seconds and lock it with a sturdy clip [applicable] suitable for rapid immersion, protect valuables from dirt, dust, sand and water; Ideal for long walking adventures, kayaking, rafting, boating, camping, etc.