The 9.75 base curved lens provides full side protection. Foam padding forms a perfect seal to keep out dust and airborne particles. Lenses are treated to prevent fogging and self seal small scratches. Interchangeable temples/headband included with each pair of V2G. The headband features quick fit retainer. Lenses provide 99% protection against harmful UV-A and UV-B rays. Exceeds ANSI Z87.1-2003 High Impact requirements and CSA Z94.3 standards.