The Shinobi sports performance sunglasses are our aggressive premium model with a fixed lens attachment for high-speed activities. Poor vision will no longer affect you. The Shinobi features the same premium 2.2mm thick machine ground Toric lenses as the Ronin and has an extremely stable and easy to change lens attachment technology. Push back the two knobs on each temple, squeeze the centre of the nose bridge ? change the lens and snap it right back into place. The Shinobi offer a great fit for all our helmets, with temples designed to be non-intrusive and maximise comfort. Included is a hard case, micro pouch and three nose pieces to help you find the perfect fit.