Bestway Flowclear sunscreen keeps the heat/water in and the debris out The sunscreen creates a greenhouse effect which retains the water/heat in the pool while keeping leaves and other debris away from the water. Also the chlorine level stays longer with this protection. Economical and environmentally friendly. Specifications: - PE material - The sun shade uses solar energy to heat the pool water and prevents the heat from disappearing - Minimizes pool debris - Fits 3.05m Steel Pro pools, 3.05m Steel Pro MAX pools, 3.05m round Fast Set pools and 3.05m round Hydrium pools Contents: A pool sunshade