Arms remove easily and fit included backstrap for two ways to wear. Frames feature patented ForceFlex™ Technology for an unbreakable, bendable frame that flexes for a custom fit and exceptional comfort. Side vents and fixed foam padding to seal out the elements. Lenses filter out 100% of ultraviolet radiation. Meets standards for ANSI Z87.1, EN 166, AS 133.7 and Military MIL-PRF 31013 standards. Metal badge on arms. Includes microfiber bag. Lifetime frame warranty. 98212-12VM