Adjustable: These assembled face shields come with a pin lock suspension headgear that attaches to the user’s head with a locking mechanism, similar to that of a belt. Assembly: This extra-large, high-impact blue plastic single crown provides excellent above-the-head coverage and allows for increased air circulation; Combining with Sellstrom 390 Series Face Shield Windows will provide exceptional panoramic views. Certified: This single crown safety face shield with ratchet headgear, meets ANSI Z87.1+ and CSA Z94.3 standards and can be used for various types of grinding, brazing and cutting operations when paired with Sellstrom’s Face Shield Windows.