Matsuda M3151 Sunglasses combine refined Japanese craftsmanship with a vintage navigator silhouette. These lightweight titanium frames are designed for everyday wear and feature detailed Art‑Deco engraving for a distinct, polished look. Key attributes: Yellow | Ag Sun Gold | Titanium | UV400 protection | CR-39 lens options | Lightweight construction | Ultra-lightweight titanium temples | Adjustable nose pads | Includes original case | Navigator/aviator silhouette | Double bridge | Engraved Art‑Deco filigree | Hand-layered top bar | Antique gold finish | Dimensions & fit: 54 × 18 × 145 mm | Navigator/aviator silhouette, medium profile | Unisex fit | Composition & care: Frame: Titanium | Lenses: CR-39 | Clean lenses with a microfiber cloth and lens cleaner. Store in the original case when not in use. Have prescriptions fitted by a qualified optician.