Pool Cove is a chemically neutral foam designed to fight corrosion and prevent premature wearing or stretching of your pool liner. Install these wedge-shaped coves in the void at the base of your pool to ensure your pool liner doesnt balloon under the weight of the water it holds. Unlike sand or dirt, Pool Cove will not erode, and will not hold moisture. This small investment will add years of life to your pool and liner. Please see sizing chart below to determine how many pieces of Pool Cove are needed for your pool.