Just wanted to let anyone that orders solar covers from solarcovers.com, know that the thicknesses have changed. What was sold as a 12 mil cover 3 years ago is now much thinner. I ordered the same cover recently that I ordered 3 years ago and was surprised to see that it was much thinner. I think they sent me an 8 mil cover. Original shipping weight of 38 lbs, was now 32 lbs. Had several conversations with them about it on the phone, and they assured me that I did get what was being sold "as" a 12 mil cover, and tried to tell me that 8 mil, 12 mil, and 16 mil are just industry language used by the manufacturer NTI, and not the "actual" thickness. I told them that was nonsense. They would have upgraded me to a 16 mil for free, but unfortunately I had already installed the cover on the pool and they wouldn't take it back, but they did give me a credit to keep the cover.