The Vevor pool water tubes are designed to hold winter pool covers securely in place for inground pools. This 5-piece set features a double-chamber design for improved stability and reduced rolling in windy conditions. Made from durable 0.3 mm PVC, the tubes resist sunlight, impact, and minor abrasions for reliable seasonal use. Reflective strips on both ends improve nighttime visibility, while leakproof screw caps with rubber gaskets help prevent water loss. Their flexible construction also allows them to conform to irregular pool shapes for easier edge coverage.