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™, 7000002291, Cap Mount Headgear, For Use With: Faceshield Attachment, H-700 Series Hard Hats, Hardhat Attachment and Ratchet Suspension, Specifications Met: ANSI Z87.1-2010, Thermoplastic, Blue, 9 in L x 1 in W x 9 in H Dimensions