knee support 1.Material:nylon,rubber 2.Size:S/M/L/XL 3.MOQ:1200pcs ... long fatigue, and prevent incurring injury.As a device suitable for various sports, neoprene can enhance knee muscle warm keeping ability ... .Composition :65% rubber and 35% nylonApplicable for :Knee arthritis, slight knee strain, knee impotenceknee Support Materialnylon,rubberSizeS ...