MSA's Advance Cap features cooling vents along the crown for improved air circulation, a lightweight design for added comfort, lateral contours above the ear for easy integration of hearing protection, a four-point ratchet suspension system with a soft, absorbent sweatband and a Glaregard underbrim to reduce reflective glare. Advance Caps are not specifically designed to protect against lateral blows from the front, side or rear. MSA's Vanguard protective helmets must be used if lateral protection is desired.  Meets or exceeds the applicable requirements for a Type I helmet (top impact) as outlined in ANSI Z89.1-2003, Class C.