I purchased this mattress in August 2010 and I am trying to sell it on *****!!! I as so disappointed at this mattress I could cry! I wake up everyday with my entire body aching! It has a big bubble in the covering that I cannot get out since the coolmax cover does not come off! This was my worst purchase from Overstock.com! Please do not waste your money! I read the comments prior to purchasing and they were more positive than negative but I am here to save you from wasing your $$$.