The Free Aero Race 4 Bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number.

The original Free Aero Race Bibshort was first introduced over a decade ago and has logged literally millions of kilometers under the backsides of our sponsored pro riders and has been the best-selling short both in the Castelli retail collection and in our Servizio Corse custom program. 

The fourth major generation of the short features the updated Progetto X2 Air Seamless seat pad. This pad separates a soft, stretchy skin care layer that moves with your body from a generously padded cushioning layer that replicates the form of your saddle. Eight-hour rides are no problem.

PRODUCT FEATURES

• Vortex dimpled fabric on legs for aero performance
• Forza fabric on inner legs with 38% Lycra® content for perfect fit
• Stripe mesh engineered minimalist bib construction keeps you cool
• GIRO4 leg gripper elastic for better grip distributed over larger area
• Doppio V construction in front for increased support and comfort
• Flat-lock stitching
• Progetto X2 Air Seamless seat pad
• Weight:172 g