Aerodynamic engineering makes this speed specialist the ultimate eyewear for cycling, running and beyond. An open-edge brow maximizes the upper field of view, and our new Advancer nose bridge instantly opens airflow to combat fogging and overheating. Features: Brow-less design allows for improved upper field of view Advancer™ nosebridge positions the frame to block light while opening airflow to combat fogging and overheating Interchangeable temple lengths for improved helmet compatibility Durability and all-day comfort of lightweight O-Matter™ frame material No-slip Unobtainium™ nosepads and earsocks: Increase grip with perspiration Three-Point Fit: Comfort and performance that holds lenses in precise optical alignment Frame suitable for medium to large faces Optimal precision and impact resistance that meet or exceed ANSI Z80.3 optical and impact standards