Tifosi Seek Photochromic Sunglasses - 2013 Overstock - $39.73

Featuring light-sensitive lenses, the Tifosi Seek Photochromic sunglasses automatically adjust to changing light conditions, a handy feature when you don't have time to stop and swap lenses. Fototec(TM) photochromic lenses darken in bright light and lighten when the sun fades. Fototec high-speed red lenses have a wide light transmission range; ideal for strong sunlight, lenses provide sharp contrast and are the darkest variable-tint lenses by Tifosi. Lightweight and virtually shatterproof, polycarbonate lenses are 20 times more impact resistant than glass and one-third the weight. Grilamid(R) TR-90 lightweight nylon frames offer a consistent fit and flexibility in all temperatures and are extremely impact resistant. Rubber nosepiece and temple ends become tackier when wet for reliable grip during exercise and hot weather; ear and nose pieces bend for a custom fit. Tifosi Seek Photochromic sunglasses fit small to large faces. Semirigid carrying case and cleaning cloth included. Overstock. - $39.73