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The FACTOR D-Max's Polarized interchangeable lens system creates a sleek and subtle design allowing unobstructed peripheral view perfect for the running trail, golf course, or weekend ride. Smith's Interchangeable lens system utilizes distortion-free, 9 base lenses to provide precise optical clarity and maximize coverage while minimizing peripheral exposure to sun, wind, and glare. FEATURES • Medium Fit (X-Large Size Lens) • Patented Interchangeable Lens Technology • Polarized include 4 sets of lenses • 9 base TLT™ Carbonic™ Lenses • Grilamid™ TR90 Nylon Frame • Hydrophilic Megol™ nose/temple pads • 100% UVA/B/C Protection • Distortion-Free Polarized Lens Model • Lifetime Warranty For more info about these features, click the links below.
SUNGLASS TECHNOLOGY Precision Optics - All about warped lens technology, polarization etc. Superior Materials - Smith lens and frame materials explained. Enhanced Vision - Learn the difference between different lens tints and why polarizaion. UV Protection - How Smith brings UV protection to your eyes. Lens Tips - How to change your lenses (interchangeable models only). RX Tech - Info on Smith prescription lens sunglasses.