The above-ground pool liners by Swimline are made up of heavy-duty, 100% virgin vinyl material protected with Lamiclear which protects against chemicals and UV fading. It also boasts the best cold crack resistance in the industry so that your pool liner can withstand the harmful winter weather. You can be sure that pool liners by Swimline are made with high-quality materials and will last long winters and hot summers.This Overlap liner is made with an elegant swirl bottom design that will add to your pool’s aesthetics. It is also perma-sealed ensuring that you will not experience leakages making for easy maintenance. Above ground, swimming pool liner is built to provide years of usage, create a protective barrier for the structure of the pool, and assist in maintaining structural integrity. Swimline ensures that you get the best for your pools. When it comes to making memories on the water, Swimline has you covered.The Swimline overlap liner requires coping strips to secure pool liner in place, sold separately.Founded in 1971, Herman Schwimmer built the foundation of Swimline with the goal of bringing a pool to every family in America with high quality pool liners. Almost 50 years and 3 generations later, Swimline has become a world leader in the production of pool liners, pool toys, pool maintenance, and watersports equipment.