Introducing the Specialized Propero 4—a helmet that’s designed to bring the aero advantages of the S-Works Evade 3 together with the ventilation of S-Works Prevail 3, and it does it all with the comfort and confidence Specialized helmets are famous for, earning the highest 5-Star Virginia Tech helmet rating from internationally renowned Virginia Polytechnic Institute and State University. Every detail of the Propero 4 was created with our equation for speed in mind. Aerodynamics Ventilation Lightweight = Fast. We set out to ensure this high-performance race helmet performs in every one of these categories, yet ensure it remains accessible performance for more riders—from new racers to veteran KOM/QOM collectors.