Bestway Rectangular solar pool cover for 4.04 m and 4.12 m above-ground pools Size: 3.80 m x 1.80 m Compatible with Bestway metal-framed rectangular pools 4.04 m x 2.01 m and 4.12 m x 2.01 m Uses solar energy to heat pool water and prevent heat from escaping. Prevents debris and leaves from falling into the water and algae from growing Contents: 1 solar pool cover Compatible with rectangular Bestway metal-frame pools measuring 4.04 m x 2.01 m and 4.12 m x 2.01 m Uses solar energy to heat pool water and prevent heat from escaping. Contents: 1 solar pool cover