Engineered for sports enthusiasts, Tifosi sunglasses are a fantastic choice whether running a 5k, cycling a century, or spending the day on the water.. . . . . . . Grilamid TR 90 frame offers an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. Smoke lenses provide 15.4% L.T. light transmission, show the least amount of color distortion, and are perfect for full sun conditions. Lenses are made of scratch resistant, shatterproof polycarbonate. Optically decentered lenses eliminate distortion and prevent distracting magnification. Lenses are vented for increased air circulation to prevent fogging and keep you cool. Hydrophilic rubber nose pad and earpieces ensure a non slip fit. All Tifosi sunglasses provide 100% UVAUVB protection. Fits small to large faces.