Nike Flyfree M sunglasses combine a slim, ventilated frame with interchangeable lenses for adaptable performance during outdoor and athletic activities. Key attributes: Satin Black | Dark Grey | Multicolor | Injected plastic | Interchangeable lenses (Nike Mount Interchange System) | 100% UVA/UVB protection | Nike Max Pro reduces light reflection and repels water and oil | Ventilated channels to reduce fogging | Prescription-friendly frame | Adjustable nose pads | Customizable silicone temple tips | Includes extra interchangeable lens | Secure mount locking system (interchangeable lenses) | Four-base flat lens | Slim geometric frame | Ventilated temples, hinges and top bar | Mirrored lens options | Dimensions & fit: 59-14-135 (Lens width - Bridge - Temple length) | One size | Adjustable nose pads and temple tips for a personalized fit | Composition & care: Injected plastic | Silicone (nose pads and temple tips)