Belmondo Kingsize Duo is a superior dual layer lying area mat offering a comfortably soft surface. The specially designed 25mm thick lower 'cup' layer creates a good shock absorption when lying down and good support when standing up. The top layer is 15mm thick and can be jointless upto a maximum size of 525cm x 600cm making it an excellent option for an easy to clean lying area. The combined two layers create a 40mm thick mattress system and is held in place around the edge of the area by a plastic board underneath and a 'VITA' strip on top creating a nice safe finished edge on top.