Crafted from durable vinyl, this pool liner is designed to fit 18x33 ft oval pools with a wall height of up to 54 inches. Built to last, it's resistant to wear, punctures, and tearing, while offering excellent water retention. The pool liner ensures long-term outdoor use. | Vevor | | 18-Foot-by-33-Foot Oval Pool Liner for Overlap Above Ground Swimming Pools, 48-to-54inch Wall Height | Blue | Best Buy