There's a time and a place to sweat the details. Designing the Riptide, we did just that. These Smith frames are a classic, with bio-based frames. Spring hinges expand the fit at the temples. The extra flex is not only more comfortable, but feels snug through runs and bike rides. Available in prescription with our standard clear Carbonic lenses for maximum clarity or you can opt for color-enhancing ChromaPop™ polarized lenses in our prescription sunglasses. Smith Optics proudly assembles select products in our Clearfield, Utah facility, part of a nearly 60-year commitment to expanding U.S. operations and innovation. Read more about Smith prescription eyewear. Vision All Smith clear lenses come standard with a Premium Anti-Reflective coating, on the front and backside of lenses, which reduces glare to prevent eye fatigue and gives better visual acuity True optical clarity, through lightweight Polycarbonate lens material made for daily and active wear Superior hard coating, for improved scratch resistance Hydroleophobic coating repels water, dirt, and grease Photochromic and blue light lens options available Fit / Integration Medium-large fit, large coverage 6-base lens curvature provides a modest wraparound fit Megol nose pads provide non-slip grip so glasses stay put Spring hinges self-adjust to your face for a snug, comfortable fit Frame Evolve™ bio-based frame material is lightweight and durable Custom Smith logo hinges What's Included Hard case Microfiber bag