Review on 12X24 Rectangle Solar Pool Cover With Grommets: Heat Retaining Blanket For In-Ground And Above-Ground Pools, Bubble-Side Down - Sun2Solar 1600 Series Bundle by Nate Mims

Ordered the 20 x 40 16 mil. It was a tiny bit longer and wider than 20 X 40. Good thickness and floats without having to put the grommets in. The bubbles weren't as "full" as some of the other solar covers we've had and looked under-inflated. The instructions say the bubbles will inflate over time but it's been over a week and they're still not looking any fuller. If it holds up and the bubbles never get any fuller I'd still consider it a good buy for the money considering it's 16 mil.If I had to guess I'd say the pool temp is higher by about 5 degrees than it would have been without the cover but the sun hasn't really been out much since we've had it. Chlorine levels are higher than they would be without the cover and evaporation is lower.