The knee support are constructed of 3mm thickness neoprene, with mesh fabric on back to remove excess perspiration Item:YKKN011Description: basic breathable neoprene knee support with mesh fabricMaterial: nylon, neoprene, mesh fabricSize: S, M , L, XLFeature:1.The knee support are constructed of 3mm thickness neoprene, with mesh fabric on back to remove excess perspiration.2.proivde comfortable ...