Keep your pool clean, spotless, and heated when not in use with Bestway's round solar pool cover. This specially designed solar pool cover creates a greenhouse effect in your pool. By floating directly on the water's surface, the cover captures the sun's heat to keep the water warm and keep dirt out. Covers for above-ground pools are an essential accessory as they prevent algae growth and reduce the amount of chemicals needed to keep your water in top condition. This cover is perfect for a Bestway round frame pool with a diameter of 3.96 m or 4.27 m, as well as for a round inflatable ring pool with a diameter of 4.57 m.