3M Ratchet Headgear H8A， Face Protection 82501-00000， is a high-strength thermoplastic crown that provides impact resistance protection to the head. Use this headgear with 3M faceshields (sold separately) for combined head and face protection. Adjustability and a five position crown strap allow for a customized fit that is more comfortable to individual wearers. With an adjustable ratchet suspension， this headgear features a unique system that allows faceshield window replacement in seconds and helps provide a precise fit. This headgear gives users the option to switch out faceshields based on materials， sizes， shapes and tints based on specific task requirements. Head protection is recommended for workers in metalworking， woodworking， utilities and many other industries. Note: Even when this headgear is worn with a faceshield， workers should also use protective eyewear (sold separately) at all times. This thermoplastic headgear meets regulated performance and safety requirements of ANSI Z87.1-2003. This headgear is recommended for workers in environments where head and face protection are necessary. Workers will need to supply a faceshield (sold separately) to use with this headgear. Buying the headgear alone allows workers to switch out the faceshield if that is necessary based on the type of work being performed.