Ripstopper Rectangle In-ground Swimming Pool Winter Covers &hellip; (30 Ft. x 50 Ft.) The Ripstopper is the ultimate winter cover. It is durable, dependable and built to last! If your cover gets a hole or a puncture, no need to worry, this cover will not rip or tear. Latest technology proves to make this cover the toughest there is. Uses vinyl loops and waterbags to weigh down cover. Pool Cover: 30 Ft. x 50 Ft. Cover Size: 35 Ft. x 55 Ft.