Spa Cover Cap Thermal Spa Cover Protector - 8 x 8 Feet x 12 Inches Used to protect thermal spa covers from harsh UV rays, snow, rain and debris Stretches right over your existing thermal cover held in place with an elastic band Made from tough, woven polyethylene in a silver color to melt snow Perfect for winter months and vacation properties Spa Cover Cap measures: 8 x 8 feet x 12 inches