Our rugged mesh cover makes spring clean-up a snap. The secret to this unique cover is the tightly woven scrim that holds together insuring that no gaps or holes develop. Rugged mesh allows only rain water and very fine silt to pass through Rugged mesh's fine mesh allows rain and snow to slowly fill your pool, saving water and chemicals in the spring. Since our scrim is so tightly woven, the cover allows almost no sunlight through and ensures a debris-free pool in the spring. Arctic Armor's rugged mesh covers are made from tough woven polyethylene that is strong enough to handle ice, snow, sleet and high winds. Rugged double stitched hems are triple reinforced for strength.