Size Guide Lens Width (Caliber) 48mm Bridge Width 21mm Temple Length 145mm Lens Height 41mm SKU: 2039 Materials Organic cotton acetate and wood pulp, hand-crafted. Stainless steel soul. Reinforced steel hinges with five teeth. The type of lens is your choice at the optician. Exchanges and returns 30 days to return the product free of charge. Pick up at the requested address. Refund via the same payment method used. Greta is an acetate frame with a trendy shape for the 2023/2024 season. It has a square shape but with a curve at the bottom, resembling a Wayfarer style but with its own personality. Just look at the colorful laminated acetate used to make each model.