i love love love this mattress! would NOT be without it! it uses NASA technology using your body heat to molds to fit your body, so you get no back aches or anything because it gives you so much support, and is so snug and warm! prevents tossing and turning in the night so you wake up feeling refreshed, and you don't have to turn these mattresses over, some people may want to but you don't have to :) the only problem is in the summer you wake up boiling hot, but its amazing in the winter! what i do is put a smaller thinner quilt on in the summer so i don't get so hot. I went away for only five days a few weeks back, and my back killed being without this mattress, as soon as i got home the first thing i done was collapse onto my bed :) feels like heaven, literally! my nanny has one of these, and so does my mum, i got everyone to try it and they just HAD to get one!:) you seriously won't regret buying this mattress, worth the money and you won't have another bad night sleep again! haha i feel like i'm trying to sell this to you, but really do it! :D hope this helps.