Thor Anti-Fog Smoke Lens Safety Glasses feature tough, scratch-resistant lenses that filter 99.9 percent of harmful UVA, UVB and UVC rays to keep your eyes protected from the sun. Sleek, blade-style design provides a sporty look. Durable frames bend and flex without breaking. Flexible rubber temples and nonslip nose offer a comfortable fit for all-day wear. Anti-fog glasses with Fog-Off treatment won't wash off or wear off for fog-free viewing even while wearing a dusk mask. They are perfect for outdoors and in bright light. Impact-resistant glasses are tested and approved by ANSI Z87.1 plus for High Velocity Impact Protection and meet CSA Z94.3 requirements. They are also MIL-PRF 32432 approved for ballistic impact by withstanding a steel projectile shot from 660' away at 201m per second.