Floating Bubble Cover 7′ square
Heavier-duty 16 mil. (16/1000″) film thickness for long life. ThermoFloat Spa Blanket saves energy expense, reduces hot tub cover water absorption, shortens heating time. Acts as a debris shield, and solar blanket on in-ground spas. Reduces evaporation heat loss up to 95%. Easy to trim with scissors. Set with bubble-side down for maximum effectiveness and heat retention.