The Shinobi Sport Performance sunglasses are our aggressive premium model with a solid lens mount for high-speed activities. Poor vision is a thing of the past. The Shinobi is equipped with the same high-quality 2.2 mm thick toric lens as the Ronin and features extremely stable and easy-to-change lens attachment technology. Slide back the two knobs on each temple, squeeze the center of the nose bridge, replace the lens and snap everything back into place. The Shinobi fits perfectly with all our helmets, with the temples designed to minimize interference and maximize comfort. Included is a hard case, microfiber pouch and three nose pieces so you can find the perfect fit for you.