Based upon the prior reviews, I purchased this set in King. The mattress is not very heavy like my 15 year old double sided pillow top it replaced. Chances are it will only last 5 - 7 years tops. The mattress material looks good but the corners of the mattress are crushed down and the sewing on the pillowtop un-even. The springs also make noise occasionally when getting in/out of the bed. I called Sealy and Overstock thinking it was a factory second?? Apparantly not??? The set also came in plastic not a box like I expected. I have struggled to like this mattress as it is not a posterpedic so there is little support in the midle of the mattress. I would not call it firm like other reviewers as it dips when you lay in it around the hip area. It really needs the center support but doesn't seem to have any. I put a 2" topper on it but that made it way too soft. With or without the topper, I have awaken with a backache on multiple occasions. I should have kept my old set as it was a better made mattress and still offered a better nights sleep. Spend alittle more and get the support in the center, probably a posterpedic or equivilant.