These sunglasses are made out of superior Italian Acetate. Inside the design you'll discover its strong, lightweight metal core. This core connects the pieces of your Komono frame as one smoothly functioning fashion item. Size: 51mm-20mm-148mm Handcrafted Italian Acetate Frame Custom 5-Barrel Optical Hinge and Core Wire Universal Fitting Nosepads CR 39 lenses (UV 400. Category 3) Hard Case and Cleaning Cloth Included