Offering an unrivalled field of view thanks to their high and sweeping semi-rimless design, the Sutro Lite Matte Carbon Clear Photochromic Sunglasses keep you focused on the way ahead without any obstructions. The super-durable O Matter™ frame material also ensures the Sutro can take on the demands of all your sports activities. From early morning runs before sunrise to misty midday bike rides to dark evening trails, you'll also reap the benefits of Oakley's advanced Photochromic lens technology. The clear base lens reacts to ever-changing light conditions so you will always get the clarity you need to enjoy your day. All-day comfort and a secure fit come by the way of the Unobtainium® nose and temple pads. Even during the sweatiest of efforts, these pads will keep your sunglasses from slipping and maintained firmly in place. High Definition Optics - HDO® High Definition Optics (HDO®) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance. Clear To Black Iridium Photochromic Light Transmission: 23% Light Transmission (Activated): 23% Light Conditions: Changing Conditions Contrast: Neutral Base Lens Colour: Clear