Cap-mounted headgear assembly can be used with any 3M™ Faceshield to help provide face protection. Designed to fit most hard hat accessory slots. High-strength thermoplastic crown provides impact resistance. 3M™ Cap Mount Hard Hat Headgear H18 versatile headgear assembly can be combined with any 3M faceshield for face protection. This high-strength thermoplastic cap-mount headgear provides impact resistance and features a unique system that allows window replacement in seconds. Meets ANSI Z87.1-2010 requirements. Requires protective eyewear, sold separately.3M provides reliable head and face protection products that meet regulated performance and safety requirements.