The Bx Eyewear Is Designed To Adjust To Workers, Instead Of Them Having To Adjust To It. Features Include Adjustable Temple Lengths, Soft, Universal Fit Nose Bridge, Soft Tip Temples, And Three Lens Angles For Custom Fit. Reader Lenses Available For Up Close Work. High Impact Polycarbonate Lens Blocks 99.9% Uv Rays. Meets Ansi Z87.1 2003 & Csa Z94.3 Standards.