Do these sunglasses look familiar to you? No wonder, because the Shuron Ronsir starred in the movie Easy Rider on the nose of actor Jack Nicholson. The Browline Ronsir is one of the more significant frame designs of the 20th century, the first ever combination frame featuring plastic tops on metal rims with plastic temples. Developed in 1947 by Jack Rohrbach, a Shuron vice president, the frame became a run-away best seller that started a design trend that ultimately affected almost half of all frames sold during the 1950's. The lenses are made from Trivex, an urethane-based material with superior optics, ultra light weight and extreme strength.