Thor Polarized Copper 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. Sweat-resistant, flexible, rubber temples and nonslip nose offer a comfortable fit for all-day wear. Glasses are perfect for outdoor, nighttime, bright light, glare or high contrast conditions. Polarization reduces glare and eye fatigue around water, snow and in other bright environments. Impact-resistant glasses are tested and approved by ANSI Z87.1 plus for High Velocity Impact Protection and meet CSA Z94.3 requirements. They're also MIL-PRF 32432 approved for ballistic impact by withstanding a steel projectile shot from 660' away at 201m per second.