Chesterfield puts a contemporary twist on the geek-chic silhouette of these CH58XL eyeglasses for men. The robust frames are crafted in lightweight acetate, a durable plastic made from cottonseed fibers. The skull temples curve inward, and widen slightly at the tips for stability and grip behind the ears. The flexible spring hinges retain their initial adjustment for a comfortable, secure fit. The saddle bridge and square endpoints add to a hipster vibe in these CH58XL glasses from Chesterfield.