The I/O7 replacement lenses from Smith are exactly what they sound like. Just pick out the tint you want and enjoy.
Spherical Carbonic-X Lens - Smith has set the standard in lens performance. Each lens is individually molded to offer optimum scratch and impact resistance, increased visual acuity, and enhanced contrast sensitivity. The inner lens is impregnated with Smith's Anti-Fog lens treatments for increased anti-fog performance. The Carbonic-X lens meets Class 1 optical standards as well as ANSI Z80.3 standards.
100% UVA/B/C Protection - All Smith lenses provide 100% protection from harmful UVA/B/C rays.
Fog-X Lens Treatment - Smith's Fog-X treatment employs a hydrophilic, micro-etched surface to absorb moisture and disperse it over a wide surface area to prevent fogging. Because it is physically carved into the lens, it can't be wiped away like other fog treatments.
Tapered Lens Technology (TLT) - When light passes through a medium it refracts, or changes course. If left uncorrected this refraction can cause visual distortion and eye fatigue. Smith's Tapered Lens Technology straightens out the incoming light rays by progressively tapering the lens from the optical center toward the peripheral view. What this means for you is that you see with 100% accuracy and maximum comfort.
Vaporator Lens Technology with Porex Filter - The most advanced thermal lens ever. Patented Vaporator silicone seal creates an airtight, bomb-proof seal, eliminating lens delamination. Coupled with their patented Porex filter, the thermal lens adjusts to air pressure and elevation changes while preventing water vapor entry.
I/O7 - Flip up and rotate the quick release lever, pop out the lens and replace with a new one.