Gateway Safety 16GB79 Scorpion Adjustable Safety Glasses, Clear Anti-Fog Lens, Black Frame Adjustable length and ratcheting temples offer customized fit Gap between frame and lens minimizes fogging Free "Scorpion's Tail" retainer helps prevent loss and damage Independently tested and certified by Underwriters Laboratories to meet ANSI Z87.1+ and CSA Z94.3 standards Four-point ratchet temple adjustment for true one-size-fits-all comfort