Designed for small to medium faces, the comfortably lightweight Oakley Trillbe X Iridium Sunglasses have a softly rounded front with a sculptured keyhole bridge, and its stem architecture takes vintage style into modern territory.Three-Point Fit holds lenses in precise optical alignment while eliminating pressure points Plutonite? Lenses offer top UV Protection filtering 100% of all UVA, UVB, UVC and harmful blue light up to 400nm O Matter? stress-resistant frame material is both lightweight and durable for all-day comfort and protection Iridium coating helps in reducing glare and enhancing vision Features High Definition Optics? (HDO?) which 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 Oakley performance eyewear offers uncompromising protection against high-velocity and high-mass impact.