260g 100%Knit Stretch fabric(HS1244-1) 1.5" 20D convolute foam 25g non-woven fabric 0.75" 40D lumbar gel foam 1" 22D foam 80g non-woven fabric 9" pocket coil, waist diameter of pocket coil: 6.7cm, diameter of wire: 13gauge(1.8mm), 4 side & row border wire: 11 1/3gauge(2.2mm) 110g non-woven fabric All of our mattresses are quilted by a computerized quilting machine ensuring perfection. We have strict technical team and advanced equipment, each craftsman is well trained and held to high standard. We ensure that Yuanchang mattress will bring you the best combination of technological advancements and craftsmanship to awaken each day fresh.