The best days are active days. The Smith Willow Rx glasses are the go-to pair for daily adventures. Bold and subtle at the same time, they bridge easygoing style with get-outside durability and performance. Corewire temples offer easy adjustment for a secure, customizable fit while lightweight, durable, bio-based Evolve™ frames stand up to adventure. 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 Superior hard coating for improved scratch resistance Hydroleophobic coating repels water, dirt, and grease Photochromic and blue light lens options available True optical clarity, through lightweight Polycarbonate lens material made for daily and active wear Fit / Integration Medium fit, medium coverage 4-base lens curvature is just right for everyday wear Megol temple and nose pads provide non-slip grip so glasses stay put Frame Evolve™ bio-based frame material is lightweight and durable Injection molded frame with adjustable wire-core temples