Thermal Blankets pay for themselves by saving energy, protecting your hot tub cover, and reducing heating time. Also acts as a solar-cell sun blanket and debris shield, especially on in-ground spas. These premium floating covers are one of the best little investments you can make by conserving heat 3 ways:
Reduces heat loss from evaporation up to 95%
Provides extra insulation in addition to spa cover
Inhibits spa cover R-value loss from water absorption