Ralph Lauren The Nikki Sunglasses combine a refined butterfly silhouette with Havana acetate and brown gradient lenses for elevated everyday sunwear. The frame is compatible with prescription lenses and comes with official protective accessories. Key attributes: Brown | Havana | Acetate | Gradient lenses | Prescription lens compatible | Supplied with case and cleaning cloth | Butterfly shape | Tortoiseshell frame | Dimensions & fit: Lens width: 55 mm | Lens height: 42 mm | Bridge width: 21 mm | Temple length: 145 mm | Large fit (55 mm lens width) | Composition & care: Acetate | Wipe lenses with a microfiber cloth; store in the supplied protective case.