Snow2Winter 22 Gauge 1x8 Single Chamber Water Tubes For Swimming Pool Winter Covers-6 Pack Heavy duty 22 gauge vinyl Each water tube measures 1' x 8' ft long and is a single chamber water tube Just use a garden hose to fill water tubes (remember only fill half way to allow for ice expansion) U.V. Treated / Color: Blue Our Water bagsare the best way to keep your pool cover secure all winter long. The water bags are manufactured from quality heavy gauge vinyl treated with UV inhibitors and anti-bacterial and anti-fungus additives. They are designed to withstand sub-zero