Persol PO3401S Sunglasses combine Persol craftsmanship with Cassina collaboration design in a limited-edition acetate frame. Crystal lenses and refined bridge detailing deliver optical clarity and a polished everyday sunwear look. Key attributes: Black | Green | Acetate | Crystal lenses for high optical clarity | Monogram engraving available on temple arrow | Etched Persol and Cassina logos on inner temple | Curved temple tip for secure fit | Refined milled bridge detailing | Distinctive curved temple tip | Persol & Cassina collaboration limited-edition design | Etched logos on inner temple | Dimensions & fit: Lens width: 53 mm | Bridge width: 20 mm | Temple length: 145 mm | Frame size: 53-20 | One size — best for most faces | Face coverage: Standard | Composition & care: Acetate | Crystal | Wipe lenses with a soft lens cloth. For deeper cleaning use neutral soap and water; dry with a soft cloth. Avoid solvents, alcohol and abrasive fabrics. Store in the provided case and avoid prolonged exposure to high heat.