Floor underlay Density:22,30~160kg/m3 Thick: 2mm,3mm,4mm... ... ,1.37m,1.83m...ect Material: PE,PVC,XPE,Mesh... Floor underlayDensity:22,30~160kg/m3Thick: 2mm,3mm,4mm...ectWidth: 1 ... .37m,1.83m...ectMaterial: PE,PVC,XPE,Mesh...Color: white,blue... Character: Fire proof,water proof,anti-sound,avoid moisture,environmentally ...