I thought this was a medium firm the mattress is very firm not comfortable but it does not leave you sore either  if this is medium I would have been better off getting a plush this mattress feels kind of like a rock we try to re position and then have to re position again I thought gel memory foam was supposed to be better than the memory foam mattress alone  not my favorite my old mattress was a tad bit more comfortable than this and seriously thinking about putting it back on my bed