Tifosi Slip SunglassesThe Tifosi Slip Sunglasses pack sport-ready technology into a small and stylish package. The Slip's decentered, shatterproof polycarbonate lenses virtually eliminate distortion, give sharp peripheral vision, and provide 100% protection from harmful UVA/UVB rays, bugs, rocks, or whatever comes your way. The Slip frame is adjustable in the nose piece and the temples, ensuring a no-slip fit for any active pursuit. Finally, the Slip features interchangeable lenses to match you chosen sport perfectly.Specifications:Fit: small to largeWeight: 25 gramsInterchangeable Lens SystemBIKE / RUN / HIKE Interchangeable LensesTifosi BIKE / RUN / HIKE Interchangeable models (Smoke or Brown / AC Red / Clear lenses) are best for spinning down the open road, running to your favorite tunes or trekking through the shaded woods. Dial in your Tifosi Interchangeable sunglasses with Smoke or Brown when the sun is high and the sky is deep blue, AC Red for sunny-to-cloudy conditions and Clear for low-light conditions.All-Sport Interchangeable ModelsAll-Sport (Golf, Tennis, Baseball and More) Interchangeable Models (Smoke / GT / Extreme Contrast lenses) are designed to improve your game, whether it be golf, tennis or baseball. The Golf / Tennis (GT) lens is great for full sun and increases contrast so you can quickly spot your ball in flight. The Extreme Contrast (EC) lens is designed specifically as a greens-reader, helping you spot subtle breaks on the green as you plan your next putt. The Smoke lens is a great all-around lens that really performs in full-sun conditions.Fototec Lens TechnologyFototec lenses with variable tint technology (T-V) 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. Then with cloud cover, the particles return to their previous state letting through more light. Tifosi Fototec lenses offer 100% protection against harmful UVA/UVB rays. KEY FEATURES A. Polycarbonate Decentered LensHigh impact resistance--flex instead of shatter upon impactOptical clarity--decentering eliminates optical distortion and magnification100% UVA/UVB protectionB. Hydrophilic Adjustable Nose PiecesIncrease grip when in contact with sweatHydrophilic rubber resists aging and UV breakdownAdjustable nose pieces for a customizable fit and increased comfortC. Glare GuardReflective lens coating reduces glare and decreases eye fatigue while still allowing the wearer to distinguish terrain breaksD. Grilamid TR-90Homopolyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damageE. Hydrophilic Adjustable TemplesIncreases grip when in contact with sweatResists aging and UV breakdownCustomizable fit and increased wearing comfort.F. Ventilated LensDecrease foggingHelp cool the wearerIncluded on Golf Interchangeable models Tifosi is an Italian word meaning enthusiast or fan. Founded under the basic principle that quality eyewear should be available to the masses, Tifosi Optics has been designing and distributing technologically-advanced, value oriented sunglasses for sports enthusiasts since 2003. Whether it’s cycling, golf, running or fishing, Tifosi has you covered with a range of lens technologies and sleek, lightweight frame styles. Tifosi Optics lenses are made from polycarbonate material and always offer 100 percent UVA/UVB protection.