If youre serious about shaving time off your pbs then the new s works tt helmet should be top of your shopping list of upgrades this represents specializeds most advanced aerodynamic helmet as they like to put it it is win tunnel developed they do love a good play on words using years of expertise in this areaadvanced and proven aerodynamics and efficient ventilation can save in excess of a minute when compared to a standard road helmet ridden over 40kmthe patented energy optimized multi