AltaCONTOUR™ FR SAFETY Knee Pads provide a Flame and Spark Resistant FR fabric covering. GET DOWN TO WORK™ with ALTA AltaCONTOUR™ FR FEATURES: Designed for jobs requiring fire-resistant materials The soft black flexible cap provides protection and flexibility Fire Resistant material on both front and back Available with Original AltaLOK™ Easy On/Off locks featuring the Alta STRAP-keeper™ System that helps secure excess strap from flapping UltraSoft fabric meets requirements of ASTM F1506, NFPA70E Level 2, NFPA 1977, NFPA 2112 and OSHA 29 CFR 1910, 269 Strong durable kneepad construction Biomechanically-designed offers great knee motion and a comfortable fit Widely set dual AltaLOK™ fastening system to avoid bunching and provide extra comfort Compression recovery 1/2" foam padding provides firm, consistent support without bottoming out Adjustable to fit most sizes