Our Blue Full Print Design liner is made from high grade swimming pool Vinyl. It is an Overlap Pool Liner and it fits 48″ 52″ & 54″ pool walls. This product contains maximum built in protection from the sun’s U.V. Rays and swimming pool chemicals. Our Premium Grade above ground pool liners are made with lap seam construction and state of the art seaming. Our heavy duty pool liners are manufactured by Quality Pool Products and they come with a 25 Year Warranty. It also comes with Free Shipping. The liner should be carefully inspected prior to installation. This product should be installed according to the instructions that are included with each purchase. If you would like to view our return policy and the Warranty in full detail please see our Seller Information page by clicking on our seller name Shop the Great Backyard then click on “detailed seller information.” 25 Yr WarrantyBlue Vinyl Design Swimming Pool LinersOverlap Pool Liner Fits 48″ 52″ & 54″ pool walls.UV protection from the sun’s damaging rays.Lap seam construction.