Arctic Armor Aqua Blok for Winter Cover (Single Block)

Arctic Armor Aqua Blok Winter Cover Weights hold your cover firmly in place throughout the winter. Aqua Bloks are made of rugged polyethylene and designed to stay flexible down to negative 50 degrees F. They feature a secure snap-lock cover and are UV treated to give you years of wear. A unique nesting design allows for easy storage. Fill them with water, sand, or soil for a secure hold on your in-ground pool's cover. Aqua Bloks are covered by a 5-year warranty. Available individually, in 6 packs or 12 packs.