Seek FC Part #: 0190300330 Included Lenses: High Speed Red Fototec Tifosi has engaged with NXT Technology to provide the most advanced photochromic lenses available. Tifosi"s Fototec lenses, already a market leader, are now lighter and have faster transition times with proprietary NXT technology that utilizes Trivex material. In addition, the lenses are engineered to offer unsurpassed optical clarity and enhanced scratch resistance. All Fototec lenses offer 100% UVA/UVB protection. High Speed Red Fototec: 35-12% Light Transmission Sharpens contrast, details the road ahead & cycles from light to dark very quickly Ideal for activities when the sun is at its strongest Weight: 26g Fit: Small-Large Features: Adjustable hydrophilic rubber nose pad and temple