Lightweight nylon temples adjust for length and pitch. Designed to better fit today's prescription eyewear. Single lens encapsulates the eye for superb protection. Exceeds the ANSI Z87.1-2003 High Velocity Impact Standards. CAN/CSA Z94.3-07. CE EN 166 Certified. Fits over frames up to 5 3/8" W x 1 3/4" H | 137mm x 44mm.