Solar Cover for ROUND Intex 15FT Easy Set and Metal Frame Pools Most efficient type of pool cover Air bubbles absorb and transfer sun heat into the pool water Insulates pool water and reduces water evaporation by 95% Keeps debris out of the pool and reduces consumption of chemical Enjoy warm water and a longer swimming season with the Intex Solar Pool Cover for 15FT Easy Set and Round Frame Swimming Pools! Most efficient type of pool cover. Air bubbles absorb and transfer sun heat into the pool water. Insulates pool water and reduces water evaporation by 95%. Keeps debris out of the pool and reduces consumption of chemical. **Pool NOT included