After having spent a few months sending photos etc of both of our mattresses to customer service each time being given another question to answer. They asked for the order number now one is over two years old the other just under. Now I can't find the order details they now longer reply to emails, they both have same issue they sag in the middle and it wouldn't be that hard for them to check their system. The product has a guarantee which you would think they would honour it's obviously a manufacturer issue as this seems to be the reason for a lot of the complaints. I am at fault for not keeping the details and they are comfortable when they are not faulty. I would advise against buying one