Ferragamo Sunglasses. Series number: SF304SN. Color code: 738. Shape: Butterfly. Lens Width: 58 mm. Lens Bridge: 18 mm. Arm Length: 140 mm. 100% UV protection. Non-Polarized. Frame Material: Metal. Frame Color: Gold/Grey Gradient. Lenses Type: Blue. Rim Style: Full-Rim. UPC/EAN code: 886895638371. Ferragamo Blue Butterfly Ladies Sunglasses SF304SN 738 58.