I have to admit I was a bit wary about buying a mattress online and I was also wary because these mattress in a box dont have built-in side support but all my worries melted away offer a couple of nights on this mattressI did a bit of shopping in the actual shops for beds before we built this and I can honestly say that this mattress is as good as the ones I was going to buy for 1000 or moreIt is super comfortable the memory foam layer is really nice and moulds to your body it is extra soft and extra airy and to be honest the support even at the sides is pretty goodMe and the wife can move quite independently of each other on the mattress and not even feel each other and where is my last bed gave me aches and pains this is like sleeping on a fluffy cloudFor the price is highly recommended