THIS IS THE SECOND STERNS AND FOSTER MATTRESS I HAVE OWNED THE FIRST ONE WAS NOT TO BAD BUT THIS ONE IS TERRIBLE IT HAS MESSED MY BACK UP PURCHASED IT ABOUT 10 MONTHS AGO IT FELT DIFFERENT WHEN I LAYED ON THE DISPLAY MATTRESS WERE I BOUGHT IT FROM I TRIED IT FOR 60 DAYS WENT BACK TO WERE I BOUGHT IT FROM WAS TOLD YOU GOT 90 DAY TRIAL TRY IT FOR A LITTLE LONGER AND SEE IF IT BREAKS IN FOR YOU WELL IT NEVER DID WENT BACK TO THE STORE TO TRY TO CHANGE IT OUT FOR ANOTHER MATTRESS BUT THE HASSLE OF TRYING TO GET IT RETURNED IS NOT EASY NOW IAM STUCK WITH A BAD BACK AND EXSPENSIVE MATTRESS I DONT LIKE