Water bags are the best way to keep your swimming pool's winter cover secure during the colder months. This double chamber water bag lays flat on top of the winter cover and reduces the risk of the water bag rolling once frozen.
This water bag is manufactured from quality 22 Gauge vinyl. It has been designed to withstand sub-zero temperatures and has been treated with antibacterial & antifungal additives, as well as UV inhibitors to prevent fading.
Tip: If you are having trouble closing a water bag's valve, try soaking them in warm water.