Black mesh pool cover speeds up the melting process allowing water to filter through reliving pressure on pool walls. One of the strongest mesh covers available. Polyethylene with high denier ratings ensure the strength in warp and weft directions to help withstand the stress on covers during the winter. Eliminates the need to pump off water and avoids accidental spills when opening your pool in the spring. Edge binding on the perimeter to add strength. Black coating to reduce algae growth. 3 year warranty/1 year full.