Better Living through Chemistry. The Chemist is a Modern Interpretation of a Timeless Silhouette. Engineers, Biologists, and Design Geeks Rejoice! Lab Coat not Included. Proprietary, Sculpted Temples Feature Stainless Steel Spring Hinges and are Embedded with Metallic Branding. Medium Fit . Nylon Lenses. Handmade Acetate Frame. Stainless Steel Spring Hinges. 6 Base Lens Curvature. Frame Measurements 55-17-135