The Skullerz Loki Safety Glasses are full-frame named after Loki, the Norse Deity of Mischief. Designed to be worn as regular sunglasses or as safety goggles by removing the temples and attaching the included strap and adding the removable foam gasket for a dust-beating seal. These protective work safety sunglasses feature tough scratch-resistant lenses filter 99.9 percent of harmful UVA, UVB and UVC rays to keep your eyes safe in the sun. The durable frames bend and flex without breaking. Non-slip rubber temples keep the glasses secure and resist sweat. LENS TECHNOLOGIES The polarized safety glasses reduce glare and eye fatigue around water, snow and in other bright environments. Anti-fog safety glasses with Fog-Off treatment won't wash off or wear off for fog-free viewing no matter what you're doing. TESTED & APPROVED These impact-resistant safety glasses are tested to ANSI Z87.1+ High-Velocity Impact Protection and MIL-PRF-32432 Ballistic Fragmentation, Class 1.