GoFloats Inflatable Solar Pool Heaters for Affordable Pool Heating and Insulation - 12 Pack

12 PACK SOLAR HEATERS: The inflatable heaters harness the sun's energy to heat your pool during the day and keep it insulated at night 80% COVERAGE REQUIRED: Use multiple heaters to cover at least 80% of your pool's surface for optimal results; To roughly calculate the number of rings for 80% coverage, take your pool's sq. ft. surface area and divide by 30 SAVE MONEY: Includes 12 inflatable heaters; Compliments existing gas and electric heaters to save you time and money with faster heating; Also cheaper and less cumbersome than permanent retractable covers MINIMALISTIC DESIGN: Solid dark blue color provides a clean, modern look to any backyard pool versus the loud designs of other sellers HOW TO INFLATE: Avoid improper inflation; First inflate the Rapid Valve on the outer ring completely, then inflate the small inner valve (release air if heater begins to fold)