Lens and frame vented to increase air flow. Headband and temples feature ratchet adjustment for perfect fit, features quick fit retainer. Interchangeable temples and headband included with each pair of V2G. Flame resistant foam padding. 9.75 base curved lens provides full side protection. Scratch resistant polycarbonate lens provides 99% UVA/B/C protection. Passes MIL-PRF 32432 High Velocity Impact Standards.