Defender Safety H1-CH Safety Helmet with chin strap Meets ANSI Z89.1 standards. With Defend Vents,Suspension, Rachet Fit system and Defender Safety Hi-Viz Design. Type I Class C. ANSI Z89.1 2014 Standard. EN397 Standard. EPS Foam for Extra Impact Strength. Optional Visor Kit. OSHA Approved for your JobSite. Features: ANSI Z89.1 2014. Sliding breathable vent system on top of the helmet provides ultimate adaptability. Headlamp, Visor & Earmuff Attachment Points. Chinstrap with chin-cup for extra security. Suspension System for extra top impact protection. Hi-Viz Design with front & back visibility. Comfort + Sweatband developed specifically for construction applications. Lateral chin strap adjustment. Universal size.