A really great mattress had it ever actually fit the bed. Our standard double Wayfair bed needed a 190cm length mattress which this claimed to be, but after 5 days of 'plumping up' there was still a 7cm gap at the end of the bed - enough to see an entire bed slat underneath! Had to give up, send back and get a different mattress which wasn't as comfortable but is at least the length it claims to be! Big shame.