An Anti-fog lens is what is needed in those hot and humid work conditions where sweat from the face and moisture are present. Crews Dallas ST110AF provide fog protection on the Lens to keep vision clear and users moving forward productively. These glasses are comfortable to wear and the Ratchet ear piece allows them to be adjusted for a perfect fit for every user. One size fits all. No need to buy several different styles. protective eyewear from Crews. Storm Safety Glasses with Wraparound lens constructed of lightweight, scratch resistant polycarbonate delivers longevity to every pair of glasses you pull from the box and reduces future repurchases for inferior glasses. Meets the ANSI Z87+ standard for optical clarity and impact resistance.