Aqua Blocks Pool Cover Weights for IG Pool Covers - 12 Pack
THE PERFECT ALTERNATIVE TO WATER TUBES!Unbreakable aqua blocks hold down winter covers without splitting or tearing like water tubes can. Constructed from high-density black polyethylene, the walls are four times thicker than water tubes and have no seams to split or break. A UV inhibitor helps resist cracking and fading. Their unique nested design allows quick, easy storage in the spring. Secure snap-lock cover. Dimensions: 8-in. wide x 4-in. deep x 3-ft. long.