Nike 4318 Optical Frame is a semi-rimless rectangle eyewear model designed for everyday wear. It pairs a lightweight memory-metal construction with a streamlined silhouette for durable, comfortable use. Key attributes: Black | Memory metal | Lightweight | Flexible construction | Durable frame | Nylor (nylon) lens mount | Compatible with prescription lenses | Rectangle shape | Semi-rimless (half-rim) | Matte finish | Dimensions & fit: 54-16-145 mm (lens width - bridge - temple) | 56-16-145 mm (lens width - bridge - temple) | Composition & care: Memory metal (Flexon)