WispPart #: 0040300535Included Lenses: EC FototecTifosi 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. Extreme Contrast Fototec: 56-17% Light Transmission Filters blue light for enhanced "green reading" Great for sighting the contours of trails or on the courseWeight: 22gFit: Extra Small-SmallFeatures:Hydrophilic rubber nose pad and adjustable temple Product : TIFOSI WISP FOTOTEC MATTE SILVER SUNGLASSES Manufacturer : TIFOSI OPTICS Manufacturer Part No : 0040300535 UPC : 874444004821