Swimline 30 Foot Round Above Ground Swimming Pool Winter Cover with 4 Foot of Overlap, Cable, Ratchet and Metallic Grommets, Pool Cover Only high visibility shirts Color: Red Warning: This product milwaukee Color: Red Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm 1+ standard for personal eye protection Cover prevents snow ice and debris from entering pool for pool longevityPool cover is best suited for 30 FT Round shaped pools but it will also make getting your pool back into shape in the spring much easier