GPC Winter Covers 18' RD AG MESH WINTER COVERKeep your pool protected all winter with the GPC Winter Covers 18' Round AG Mesh Winter Cover, designed for maximum durability and long lasting performance. Made from high quality mesh material, this winter cover allows water to drain while blocking leaves and debris from entering your pool. The breathable mesh design prevents water accumulation and reduces the risk of damage from heavy snowfall and rainfall. Reinforced edges and strong grommets