DON'T EVER BUY THIS $3600. BEST OF THEIR LINE, MATTRESS, STERNS & FOSTER DON'T STAND BEHIND THEIR PRODUCT AND CARSONS DON'T HONOR THEIR GUARANTEE ON THIS PRODUCT. TRYING TO SLEEP ON THIS MATTRESS HAS LEAD TO ME HAVING TO HAVE MY KNEES REPLACED. I TRULY FEEL RIPPED OFF, IF THEY HONOR THIS COMPLAINT, I WOULD NEVER BUY STERNS & FOSTER MATRESS AGAIN!!! read full review »