1 ft. x 8 ft. Double In-Ground Swimming Pool Winter Cover Water Tube (10-Pack)

The Swimline 8 ft. Water Tube is made specifically for use with your pool cover to eliminate stress on your pool and the cover. It's 33% heavier then other water bags, making it super durable and its valves are easy to fill up with a garden hose. This Swimline 8 ft. Double Water Tube is used with in-ground pool covers.