I wanted to say what a fantastic company Nrem are. It's not often I leave reviews but I feel on this occasion Nrem have gone above and beyond there duty of customer service. I would 1000% recommend this company. After many years of different mattresses and we'll into the £1,000 of pounds spent on previous mattresses that didn't help! I would recommend this Nrem mattress to anyone that has a back problem, fibromyalgia or arthritis. I've had this mattress only 3 nights and already feel the benifit. Last night I've had my first full nights sleep in??? (I don't know how long) it's been that long. Previous to this mattress if I have stayed in bed longer than 2 hours my back has locked and I would be in extreme pain. So to sleep all night and my back not lock and be pain free is fantastic ???? I can't express enough how happy I am that I've finally found a mattress that is comfortable and that I can finely enjoy a full nights sleep in. If you have any doubts what so ever I would advise you to go for it. The company is great and they offer the 100 day return policy so why not. ???????? Top marks from me on both service and quality xx