20cmH pocket spring (2.4mm/1.8mm wire), 1 felt each on top and bottom, 3cm foam in pillow top, anti radiation fabric+2000#+3.5cm wave foam quilting on top, 6cm coffee color ventilated fabric in the middle of side, non slip fabric at bottom. Single size: 91*188cm king single size: 106*203cm double size: 137*188cm queen size: 152*203cm king size: 183*203cm.