A distinct keyhole nose bridge and streamlined styling define the legendary Knoxville. Classic design traits and a lightweight fit have made this award-winning frame a brand favorite for over a decade. FEATURES Made in Italy, Lifetime Warranty Blue Light Blocking, Melanin-Infused Lenses Lightweight Bio-Resin Impact-Resistant Frames Available in Two Sizes Includes Repreve® microfiber sunglass bag produced from recycled plastics Polarized OPTICS Blue Light Blocking, Melanin-Infused Lenses Optical health benefits: Protection from harmful HEV light (98%) & UV (100%) while delivering eye relaxation and accurate color perception Premium scratch resistance & impact protection lens 6 Base lens curvature CONSTRUCTION Mold injected bio-resin frame for light weight and superior durability Innovative double action hinge system for light weight and durability MEASUREMENTS Medium-sized frame: 47mm H - 139mm W - 135mm L Weight: 26g Large-sized frame: 50mm H - 144mm W - 135mm L Weight: 33g