3M™ Ratchet Headgear 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. 3M™ Ratchet Headgear offers supreme adjustability and a five position crown strap allowing for a customized fit and greater comfort. With an adjustable ratchet suspension, 3M™ Ratchet Headgear features a unique system that allows faceshield window replacement in seconds and helps provide a precise fit. The headgear gives users the option to switch out faceshields based on materials, sizes, shapes, and tints depending on specific task requirements. This thermoplastic headgear meets regulated performance and safety requirements of CSA Z94.3 ANSI Z87.1-2010.