I had read a lot of the reviews before I decided to purchase the mattress for the spare bedroom. Some reviews stated that the mattress had a smell to it mine did not . Some reviews stated that it took aver 12 to 24 full hours to reach the full 10" (some reviews even stated that it only reached up to 9.25-9.75 inches, mine reach it's full potential of 10 inches. I have actually slept on the mattress and love the feel. soft yet firm. I'm am very please!