TThe butterfly in purple is by ovvo , they developed technology to fuse titanium with surgical steel resulting in extremely light, durable and flexible frames.OVVO relied on German engineering for laser precision cuts and the final assembly was completed in Poland. In 2000, the company introduced its patented screw-free hinge technology. Because of this extreme malleability and lightness, OVVO quickly gained popularity in the European market. Prestigious Italian Institute, Certottica, certified OVVO as the only European brand featuring anti-allergic frames. Today the frames are still handmade in Germany and Poland with great attention to detail and fashion.