The PX Series thermoplastic, contemporary style structural fire helmet is a rugged design that will not scratch, crack or chip like fiberglass. It also resists degradation better after repeated high heat exposures. Certified to NFPA 1971, 2007, this helmet incorporates recommendations from veteran fire professionals from around the world. A low center of gravity provides PX models with a balanced and stable fit, increasing overall comfort. The Bullard Sure-Lock® ratchet headband adjusts to the wearer’s head with a quick turn of the knob. PX helmets feature 3M Scotchlite™ striping, which retains reflectivity to 500° F (260° C). That makes Scotchlite the toughest material available for helmet markings.