GLI's Aquatube water bags, when placed around the perimeter, will keep your Winter cover from sinking into your pool. Tubes should ideally be touching each other end to end around the pool. Installation is easy - simply fill each aquatube to 75-85% capacity (to allow for expansion of ice) with a garden hose and close the leak-proof valve.

Features/Benefits:

• 4 foot long, single chamber water bag
• Heavy-duty, rugged vinyl construction
• No-leak valves
• Easily fills with a garden hose
• Bags are black in colour
• Designed for use with inground pools