Specialized Propero 4 Mips helmet

Meet the new Propero 4 helmet - the aerodynamics of the S-Works Evade 3 combined with the outstanding ventilation of the S-Works Prevail 3, plus the comfort and reliability of all Specialized helmets, and a 5-star rating from the Virginia Tech Institute®. Every detail of the Propero 4 was designed with the equation of Aerodynamics + Ventilation + Lightness = Speed in mind.

Aerodynamics
In developing the Propero 4, aerodynamics was the starting point, and to that end Specialized performed extensive CFD testing and in our wind tunnel. With the profile inspired by the S-Works Evade 3 we already gain 4 watts, or 15 seconds over a distance of 40km.

Ventilation
Taking its cue from the S-Works Prevail 3 helmet, Specialized has achieved its goals in terms of quality. It incorporated the rear vents of the S-Works Prevail 3, and introduced 2mm micro-channels that create turbulence in the airflow through the helmet, so as to create a continuous and refreshing passage of air.

Attention to detail
In addition to aerodynamics and ventilation, the Propero 4 is characterised by meticulous attention to detail. Specialized has applied cutting-edge technologies such as MIPS and a sealing system designed for comfort. The Propero 4 goes beyond expectations.

Features

• Mips Evolve Solution is a low-friction layer that allows a sliding motion of 10 to 15mm in all directions. Studies indicate that this reduces some of the rotational forces transmitted to the brain during angled impacts.
• Propero 4 earned the highest 5-Star Virginia Tech® Helmet Rating from internationally renowned Virginia Polytechnic Institute and State University.
• FS3 Fit System & Occipital Base Adjustment optimizes comfort by personalizing fit to individual head shape, and helmet angle can be adjusted for compatibility with glasses.
• Adjustable Tri-Fix web splitter combined with thin 10mm webbing for increased comfort.
• Dedicated sunglass storage maintains a secure fit and keeps eyewear out of the way when needed.
• Micro Channeling & large rear-end vents for increased ventilation.
• S-Works Evade 3 front-end design language for enhanced Aerodynamics.
• Precision, full-wrap polycarbonate shell for increased durability and premium finish.
• Certifications: EN 1078:2012+A1:2012 European Standard.
• Real weight: 295 g (M), 320 g (L).