Eight foot long double chamber water tubes for the winter season. These tubes help to keep your winter cover in place. Each tube must be field with water and placed on top of your winter cover around the outer edge of your pool. At the end of the season drain the water out for the tubes and store for next use.

• Easy-to-fill, water-tight port
• Used to hold down winter cover
• Fill 50% with water to allow for ice expansion
• Prevents damage to winter cover
• 35% heavier than other versions on the market
• Double Chamber style with 2 leak-proof valves