In The Swim 8 x 8 Foot Spa and Hot Tub Solar Blanket Cover 15 Mil;

Spa and Hot Tub Solar Blanket Covers are a must have accessory for any spa to save you time, energy and money. This 15-mil thick solar blanket is constructed with thousands of tiny air bubbles that work to transfer solar heat into your spa water. This amazing energy-saving accessory transfers heat from the sun into your hot tub water and prevents that heat from escaping. While transferring and containing heat in your spa, solar blankets also help reduce chemical loss through evaporation, saving you money on costly chemicals and rebalancing. Extend your relaxation hours and spa season with an economical and environmentally friendly way to heat your hot tub. The Solar Blanket Cover shape is square, but can be easily cut or trimmed to fit kidney, oval or irregularly shaped spas and hot tubs.