IMPACTO® hinged action hard shell kneepads. Ribbed flat kneeling surface. Premium molded foam is toxin free. Breathable Coolmax® inner lining. Dual elastic straps with hook and loop closure. Replacement straps available, #825-STRAPS Made with 100% PVC-Free materials for a clean environment The hinged-action shell bends with your knee Long term protection from cumulative trauma injuries Provides stability when working on your knees