Hard Shell: Removable Co-polymer cover, hinged action bends with your knee, ribbed surface helps prevent slipping, flat face for stability. Padding: Firm foam padding with gel centre to provide maximum knee protection. Breathable CoolMax® lining. Cover: Padding is covered with 100% cotton durable flame resistant fabric. Closure: Attached double elastic straps with hook and loop closure. Used in industrial, assembly and construction. Helps prevent knee and hip joint stress. Provides long term protection from cumulative trauma injuries. Protects when working around flame or sparks such as when welding or grinding. Made with 100% PVC-Free materials for a clean environment. One Size Fits All