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