If it's good enough for the INEOS Grenadiers, it's good enough for us. That's the case with these Free Aero Race 4 Bib Shorts by Castelli. They're fast by design and extremely comfortable for all-day rides and races, and they're proven in the highest levels of cycling. These bibs are constructed around Castelli's comfortable Progetto X2 Air Seamless seat pad, and that shows based on the comfort and support these shirts offer. Vortex dimpled fabric gives you an aero advantage by trapping a boundary layer of hair, which causes a smaller wake and far less drag in the long run. Pressure around the legs is dispersed thanks to a lie-flat raw-cut gripper, so you won't feel constricted when all you need is support. Lightweight mesh bib straps complete the look for a seriously outstanding racing bib.

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