Swimline 15' Round Above Ground Swimming Pool Cover + Leaf Net + Air Pillow Pool Size: Fits 15' Round Pools U.V. Inhibitors Protect the Cover From Sun Damage 4 Foot Overlap (cover size is 4 ft larger than pool size) Highly resistant to punctures, tears, chlorine stains and other chemical stains Metallic Grommets, Cable &amp; Ratchet