From your local training route to the world's toughest bike races, the Free Aero Race S Bibshort was developed to meet the demands of the performance cyclist.

The Forza2 Stretch fabric molds to the body without constriction, allowing the fabric to move with every pedal stroke. The bib straps are kept lightweight and minimal while still being supportive, stretchy, and breathable to maintain a high level of comfort. The silicone grippers at the leg endings keep the short in place right where you want it. The Progetto X2 Air Seamless seat pad so you can stay comfortable even on the longest training days.

In the modern world of cycling, aerodynamics has quickly become one of the most important components of performance. After countless hours in the wind tunnel, Castelli has aero optimized the bibshort to give you a 3% decrease in CdA, making it the fastest Free Aero Race Bibshort Castelli has ever created. This means every watt you produce can be used to make you go forward faster.

• Aero-optimized Forza2 Stretch fabric for maximum comfort and aerodynamic advantage
• Aero-optimized fabric delivers 3% decrease in CdA
• Lightweight minimalist stripe mesh bib straps to minimize weight and keep you cool
• Silicone leg grippers to keep leg endings in place
• Progetto X2 Air Seamless seat pad for comfort even on your longest rides
• Back pocket for extra storage or race radio
• Short fabric rated to 50+ UPF protection