Bought 6 months ago for £699, hubby bought it as I was undergoing treatment for cancer and he wanted me to be comfortable. Now same problem as so many others, dips forming, bad night sleep all the time. Both me and hubby suffering from back and neck pain that's really bad. Big lump down the middle of the bed as well as 2 dips either side, despite turning it. Homeserve came to check and guess what..... it has to be a 3 cm tolerance and ours is only 2 cms (same excuse given to so many others) and that was 12 hours after we last slept in it. They need to check the bed when you have been in it. DREAMS Refused to change it. ITS NOT FIT FOR PURPOSE, DO NOT BUY THIS MATTRESS AND DO NOT BUY FROM DREAMS!!!