... skates, shoes, sports lining materials back cushion, bags, mat mat; The knees ... foot pad, 4,sunvisors materials,Electrical appliances, precision instrument, equipment, and other electronic products, shockproof cushion ... packaging field.ItemUnitPE Closed cellPE Opened cellDensitykg/m32,4,6 lbs2 lbsSizesmm1050X20501050X2050Thicknessmm0.5-501-45HardnessAsker C55_Standard tolerance high quality ...