27ft Round Pool Liner Pad, Pool Liner Pad for Above Ground Swimming Pools, Extra-Thick Pool Mat, Prevents Punctures, Recycled Geotextile Material Underlayment Pad, Extend Liner LifeProduct Features Thick Pool Liner Pad Made of high strength material, this pool liner pad effectively prevents damage from sharp objects such as rocks, tree roots, and glass, extending the lifespan of the pool and reducing costly maintenance and replacement expenses, allowing you to enjoy summer fun with peace of mind. Extra thick for Comfortable Experience Made from extra thick and high strength non woven geotextile, this pool mat for above gound