Keep your pool cover secure this winter with the VEVOR Pool Cover Water Bags. This set includes 5 durable, 10-foot double chamber tubes made from 0.4mm thick PVC, ensuring they withstand the elements. Each bag features a leakproof screw cap, preventing any water loss and ensuring maximum weight. The vibrant blue color adds a touch of style while keeping your pool cover firmly in place. Perfect for inground swimming pools, these water bags are essential for winter closing, providing peace of mind and protection against debris and harsh weather. Enjoy a hassle-free pool maintenance experience!