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. 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.