No one likes a waterproof bag that doesn't live up to its name. WXtex® Waterproof Bags were developed with simplicity and a purpose in mind: keep gear dry. The roll down closure forms a watertight seal. The rounded bottom substantially increases capacity without substantially increasing space occupied. WXtex also added a transparent window made of heavy duty clear film, so boaters can see what's inside. Perfect for canoeing, kayaking, rafting, and boating. Different sizes fit into available spaces.