The double mattress is too short for the base. The photo shows the difference, and yes it's level with the back edge of the base, before someone says its the skirting board width. The mattress is supposed to be 190cm. This one is 186cm. The divan base is 191cm . Why don't your bases match? Anyway the manager who dealt with it was the rudest man I have spoken to. Why bring me another set the same? You have refused to measure the bed and mattress before delivery, to prevent a wasted trip.He spoke over me, and gave me the impression he didn't want me as a customer. You have lost the sale. All I wanted was a double bed. Just one the fits your mattress and base evenly. Not hard as you are the leading bed store. Unfortunately Dreams has fallen way below the mark. Come and collect your rubbish, and refund