The difference in reaching the podium or just crossing the finish line lies in the Bell Star Pro Race Helmet. Constructed with uncompromising speed and efficiency, this game-changing, aero road helmet gives cyclists the power to optimize performance in ever-changing race situations. The Star Pro comes with a Magnetic Zeiss Eye Shield for optimal protection and visibility, plus it's removable and stores easily on the helmet when not in use. Aero Active Vents let you regulate airflow, temperature and aero efficiency on-the-fly with a simple slider mechanism -- slide open to maximize ventilation on the climbs or slide shut for a wind-cheating advantage in the sprints and flats. Overbrow Ventilation regulates temperature by drawing cool air into the intake ports and circulating it through a matrix of air channels, pushing out warm air through the exhaust ports. 2-layer liner with Progressive Layering has less dense EPS foam on interior sections and stiff EPS foam on exterior zones for strategic impact protection. The advanced, high-performance Float Fit retention system settles the helmet into an ideal up/down position for maximum comfort and security in an ultra-lightweight design. With race-winning aerodynamics and innovative ventilation technologies, the Bell Star Pro is engineered to be super-fast and super-comfortable.