To protect your in-ground swimming pool from the harsh winter elements, you'll need a pool cover like the Swimline In-Ground 18 x 36-Foot Pool Cover.This 18 x 36-foot pool cover is perfect for keeping your in-ground pool in pristine condition during the winter months, and it will also make getting your pool back into shape in the spring much easier. In-ground pool covers help prevent windblown dirt, debris, and leaves from entering your pool, so you can get back to swimming with less hassle and in less time.This in-ground pool cover has been treated with a weather proof coating meaning it will protect from deterioration and have longer longevity. It's made of laminated polyethylene sheeting woven with thick, high-density polyethylene stitching ensuring superior tensile strength and durability.Protect your pool during the harsh winter so you can enjoy it in spring with the Swimline In-Ground Pool Cover.