ALTA 50910 AltaPRO Welder Knee Protector Pad, Gray Cordura Nylon Fabric, Suede Apron, AltaGrip Fastening, Hard Cap, Round, Gray Hard gray plastic cap for easy swiveling and maneuvering on work surfaces Tricot liner wicks away moisture and keeps dirt out AltaGrip hook and loop fastening system Thick neoprene recovery foam padding for support Adjustable to fit most sizes