Wrap around lens design offers a panoramic unobstructed view CSA Z94.3 and ANSI-Z87.1 approved Five different polycarbonate lenses to choose from and all are anti-scratch Lightweight, rimless, with self-adjusting rubber nosepiece and adjustable temple length for added comfort. Complies with ANSI, CSA. 6" D x 6" W x 1.75" H