There's a time and a place to sweat the details, and when designing the Riptide, Smith Optics® did just that. These sunglasses are a classic, Italian-made style 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. Medium-Large fit / medium coverage ChromaPop™ polarized lenses enhance contrast and natural color to make details pop Smudge and moisture resistant coating for easy cleaning and clear optics Anti-reflective coating improves clarity and reduces eye strain 6-base lens curvature provides modest wraparound fit Lightweight and durable Evolve™ bio-based frame material 6-base lens curvature provides modest wraparound fit Megol nose and temple pads provide non-slip grip so glasses stay put Spring hinges self-adjust to your face for a snug, comfortable fit Microfiber bag included Lens height: 43mm Lens width: 61mm Bridge width: 14mm Temple length: 140mm Smith Riptide ChromaPop Polarized Sunglasses