Nike FLYFREE M Sunglasses combine sporty performance with interchangeable lenses and a lightweight bio-injected frame, ideal for active use and everyday wear. Key attributes: Red | Bio-injected plastic | Lightweight | Durable construction | 100% UVA/UVB protection | Nike Max Pro helps reduce reflection and repels water and oil | Ventilated channels to reduce fogging | Interchangeable lenses (Mount Interchange System) | Includes extra set of lenses | Adjustable nose pads | Customizable temple tips | Prescription-friendly | Sporty slightly rectangular frame with rounded corners | Matte finish | Tinted mirrored gradient lenses (red, yellow, orange) | Subtle contrasting logo on the temple | Slim profile with ventilated top bar and hinges | Dimensions & fit: Lens width: 59 mm | Bridge: 14 mm | Temple length: 135 mm | One size | Adjustable nose pads and temple tips for a personalized fit | Composition & care: Frame: Bio-injected plastic (derived from at least 40% castor bean oil) | Lenses: Mirrored/tinted (material not specified) | Nose pads and temple tips: Silicone | Clean lenses with mild soap and lukewarm water and dry with a microfiber cloth. Store in a hard case when not in use.