Smith crafted their sports glasses reputation on replaceable lenses. Remember Smith Sliders? These Pivlock V90 glasses are a natural evolution, though they use an entirely different system. The one piece lens has specialized slots where the temple/hinge inserts, then pivots into a locked position. The nose piece also snaps in with little effort. The Pivlock system is at once easy, quick, and secure. And since they're designed for high energy activities, the grippy Megol rubber on the ends of the temple and on the nose piece are a welcome addition to help hold the frames in place, even with your forehead on the stem chasing a breakaway.
Smith Optics is known for just that, their optics. So it comes as no surprise that they've figured out how to build sunglasses with such a sweeping, curvaceous lens, yet retain the clarity at the periphery you need for high speed sports. The lens on the Pivlock V90 series is what Smith calls their Carbonic TLT. The TLT stands for Tapered Lens Technology, and this means that the thickness of the lens tapers from the optical center, towards the edges. This thinning allows for less refraction and therefore less distortion for the light waves passing through the lens. The Carbonic lens is also highly resistant to impacts. This is a great thing to know when you think about the myriad objects that could threaten your eyes on a bike ride -- gravel from car tires, tree limbs, birds (seriously, we know from experience).
The Grilamid TR90 frame provides you with maximum comfort, maximum flexibility, maximum toughness, and maximum resistance to sweat and sunscreen. And the hydrophilic Megol nose and temple pads keep them locked in place on your face. They won't slip. They won't slide. They won't fall off.
The Smith Pivlock V90 is available in Black w/platinum, Matte Smoke w/red mirror, and Smoke Crystal w/platinum. You'll get two extra lenses. The Ignitor lens is great for overcast days as it increases definition and depth perception in low light. The Clear Mirror lens is best for very low light conditions. The lenses are interchangeable with the larger profile lens on the Pivlock V90 Max as well. The Pivlock V90 offers medium coverage, and Smith considers them a small-medium fit in terms of sizing.