Fortress Features: •Lightweight sports styling contours to the face to provide maximum protection. •Adjustable nose pad provides a comfortable fit for a broad range of bridge sizes •Vented lens allows air flow to prevent fogging •Straight back rubber coated temple tips. •Exceeds ANSI Z87.1 High Impact Requirements Clear Lens: •General purposes for indoor applications that require impact protection. •Offers protection from excessive glare. •Provides 99% protection from harmful UV-A and UV-B rays. •100% polycarbonate lenses •Scratch-resistant lenses •Vented lens allows air to flow away from the lens to prevent fogging •Also Available in Anti-Fog SB3710DT