Theres a very good reason why youll see the s works prevail team helmet at the front of the pro peloton so frequently it offers the best all round performance in a racing helmet when it comes down to weight ventilation aerodynamics and fitthe patented energy optimized multi density eps foam construction is specifically designed to dissipate energy effectively in the event of a crashthe patented aramid reinforced skeleton provides internal support to the eps foam essentially this is a fra