The Tifosi Seek FC Fototec Sunglasses provide good coverage when you're playing-in-the-outdoors. These stylish sunglasses feature de-centered shatterproof polycarbonate lenses to virtually eliminate distortion, give sharp peripheral vision, and offer 100% protection from harmful UVA/UVB rays, bugs, rocks, or whatever comes your way. With the Tifosi Seek FC Fototec Sunglasses you can choose from 2-different models. The Gunmetal Model has High-Speed Red Fototec Lenses with variable tint technology. The red lenses are made specifically for high speed activities, offer mid-range level of contrast and are perfect for cycling, running, and full sun conditions. The Carbon Light Night Fototec Lenses has the widest range of transition, are color neutral so the tint won't distort colors and are perfect for sports activities involving low and high light conditions. The Fototec lenses adjust rapidly to changing light conditions for superior clarity and protection. In bright sun, microscopic photochromic particles embedded in the lens react to UV rays, darkening the optics so you'll never squint. With cloud cover, the particles return to their previous state, letting through more light. Tifosi's Fototec lenses are market leaders because of their lightweight, durability and incredible speed. The Seek FC Sunglasses Frame is made of a homo-polyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. The Seek FC has hydrophilic rubber ear and nose pieces for a no-slip fit. Sunglasses have adjustable ear and nose pieces for a customizable, comfortable fit. The Tifosi Seek FC Sunglasses fit medium to large faces. Tifosi Seek FC Sunglasses weigh 0.92oz (26g), come with a storage bag and case and are covered by a Limited Lifetime Warranty.