I am contemplating returning it. We also own a tempurpedic mattress and this one is no where near as comfortable. This twin mattress is for our son, who has a back problem. I am glad it is firm but it is doesn't appear to have any give to it by my estimation. We are not huge people. He is only 2 so he can't say whether it is comfortable, but I slept in it a few nights and thought it was awful! Definitely thought ordering and delivery we're very hassle free!