Meet the all-new Propero 4 helmet, a result of combining the aero advantages of the S-Works Evade 3 with the ventilation of S-Works Prevail 3. This helmet brings together the comfort and confidence Specialized helmets are known for, earning the highest 5-Star Virginia Tech helmet rating. Every detail of the Propero 4 was created with speed in mind. Aerodynamics and ventilation were key factors in its development, with extensive testing in CFD and the Win Tunnel. The helmet's aerodynamic leading edge was inspired by the S-Works Evade 3, making it four watts, or 15 seconds over 40km, faster than the S-Works Prevail 3. The ventilation system was designed to be well-balanced, aerodynamic, and ventilated, drawing inspiration from the world-renowned S-Works Prevail 3. The Propero 4 is available in a range of sizes, including small, and comes in a sleek black color.