Keep your pool cover secure this winter with the VEVOR Pool Cover Water Bags. This set includes 6 durable, 8-foot double chamber tubes, designed to withstand the elements. Made from 0.4mm thick PVC, these bags are both robust and leakproof, featuring a convenient screw cap for easy filling and sealing. The vibrant blue color adds a touch of style while ensuring your inground swimming pool cover stays in place, preventing debris accumulation. Perfect for winter closing, these water bags are a must-have for any pool owner looking to protect their investment!