04 is a stylistic silhouette creating dynamic contrast with a strong rectangular frame and slim sides. Finished with silver-tone rivet hinges and deep bevel cuts along the UV-protective, flat CR39 lenses. Handcrafted in premium Acetate RenewTM, composed of 42% bio based and 28% certified recycled plastic with a customized CHIMI metal core. Each pair comes with a branded case, pouch and cleaning cloth. Material: 100% ACETATE. WARNING CALIFORNIA PROPOSITION 65. This product can expose you to chemicals including Nickel (Metallic), which is known to the State of California to cause cancer. For more information go to https://p65warnings. Ca. Gov. California Health & Safety Code Section 25249.6. Shipping eyewear products to US only. For US customers, eyewear products are categorized as Class 1 medical devices by the 21 Code of Federal Regulations (CFR) - Food and Drug Administration (FDA). Baltini ships eyewear orders on a Delivery Duties Paid (DDP) basis.