Porsche Design P'8478 50 Years Limited Edition Sunglasses revive the iconic droplet-shaped silhouette with an ultra-light titanium frame and a patented interchangeable lens system for versatile wear. Key attributes: Black | Gunmetal | Titanium | Polarized lenses | Scratch-proof polycarbonate | Unbreakable lens material | Ultra-lightweight frame | Interchangeable lens system | Replacement Olive Silver Mirror lenses included | Included leather glasses strap | Supplied in exclusive 50Y gift box | Droplet-shaped lenses | Flat base 2 curve lens profile | Matt black frame with satin-gloss platinum accents | Limited edition — 1,972 pairs worldwide | Composition & care: 100% titanium (frame) | Polycarbonate (lenses) | Leather (strap)