Purchased this horrible mattress ,having explained to sales person concerns about neck and back pain ,after 2 months i have neck,lower back and headache pain,the mattress springs feel as though they are digging into your ribs,we also felt that the mattress was not level regardless of the fact that we tried it on three bed stands,complained to the shop owner who dispatched one of his sales team,he agreed that the mattress had sagged,i then recieved a call from sealy informing me that a technician would arrive to do an inspection ,he blamed everything but hthe mattress ,he blamed the bedstand ,the floor ,as he said it was 5mm out ,i half exspected him to blame the atmospheric conditions,Ifound him to be totally on the side of sealy ( ie the company who were paying him and had no interest or regard to the customer )he completed his assesment and left ,to pass on his findings to sealy.Do not deal with this mattress or this company ,if you value your health or your hard earned money.