Waterproof Performance: -duty tarp material is fully waterproof, preventing water seepage and maintaining the integrity of your base. Easy Installation: This round pool mat is designed for quick and hassle-free setup. Simply unfold and place it under your pool to prevent debris from causing damage. Construction: Crafted from high-quality materials, our pool liner pad ensures robust protection against punctures and insulation from rough surfaces, extending the life of your pool. Versatile Use: Ideal for various pool sizes, the liner acts as a barrier, protecting against , rocks, and other objects that might damage your pool.