The XL lens shape takes performance even further with an enhanced vertical dimension. Even when your head is subtly tilted downward, things that matter will still be in your field of view. That makes it a great choice for activities like cycling. The slightly taller design also enhances performance in sports and activities where things above need careful attention. Features: Get replacement parts - Frame accessory kits are available for some Oakley® eyewear styles. Do not attempt to remove or replace any other eyewear parts as this will void its warranty. Take care of your lenses - To help maintain the High Definition Optics® (HDO®) of Oakley lenses, your new eyewear comes with a specially-woven electrostatic Microclear™ bag for cleaning and storage. Using it will preserve the superior optical quality of Oakley\'s pure Plutonite® lenses. Hand wash and air-dry the Microclear™ bag regularly. PRIZM™ Lenses Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility. Specifications: Light Transmission: 20% Light Conditions: Medium Light Contrast: Increased Base Lens Color: Rose