SIZING INFORMATION: This frame size is Medium with a hinge to hinge measurement of 129. Ideal for average faces. FRAME FEATURES: OO4129 Split Time feature an aviator, matte transparent lilac frame and Prizm brown gradient lenses Oakley Plutonite lenses are 100% UV protection (UVA, UVB, UVC and blue light up to 400mm). DARK BROWN GRADIENT are perfect for every day and designed to help reduce glare and enhance vision especially in medium light conditions. Light transmission: 24% O MATTER STRESS-RESISTANT FRAME: Oakley's lightweight, durable frame ensures all-day comfort and protection. Injection-molded thermoplastic O-Matter offers better strength and flexibility than acetate, resisting shifting or deforming over time UNOBTANIUM EARSOCKS & NOSE PADS: Unobtanium earsocks and nose pads for increased comfort and performance. Pads increase grip with perspiration to help provide a secure and custom fit MICROBAG & CLEANING CLOTH INCLUDED: Includes a microbag and cleaning cloth for lens care and storage—click on the Oakley link above the product title to explore the full Oakley eyewear assortment