Deluxe Foam Thermal Blanket, 7' x 7'Your spa deserves the utmost care, and our Deluxe Foam Thermal Blanket is designed to provide superior protection. By floating beneath your spa's cover, this indispensable accessory not only shields the cover from chemical damage but also enhances heat retention, significantly reducing energy costs. It works seamlessly with your existing hot tub cover to create an effective barrier that keeps the heat where it belongsinside your spa. This dual