Maui Jim Koko Head Sunglasses combine a rounded, subtly squared frame with advanced polarized optics to deliver clear, glare-free vision for everyday outdoor use. Key attributes: Matte tortoise | Nylon | Polarized lenses | HCL Bronze tint | SuperThin Glass for crisp optics | High UV protection | Glare reduction | Lightweight construction | Durable frame | Subtle temple logo | Available in prescription | Rounded, subtly squared frame | Keyhole bridge | Classic silhouette | Subtle logo on temples | Dimensions & fit: Lens width: 48 mm | Lens height: 40 mm | Bridge: 22 mm | Temple length: 138 mm | Classic fit | Adapts to many face shapes | Composition & care: Nylon frame | SuperThin Glass lenses | Wipe lenses with a microfiber cloth and lens cleaner; store in a protective case; avoid exposure to high heat and harsh chemicals.