Engineered for performance, the Free Aero Race S Bibshort combines all-day comfort with aero optimization proven in the wind tunnel. The Forza2 Stretch fabric molds to your body for a supportive yet unrestricted fit, while lie-flat bib straps and a breathable mesh back add ventilation. Silicone leg grippers hold everything in place, and the Progetto X2 Air Seamless seat pad ensures long-distance comfort. With aero gains delivering up to a 3% reduction in CdA, it’s Castelli’s fastest Free Aero Race Bibshort to date.

• Race-fit aero bibshort
• Weight: 187 g
• Temperature range: 15–35°C / 59–95°F
• Forza2 Stretch fabric for comfort and aerodynamic advantage
• Wind-tunnel tested for 3% decrease in CdA
• Lie-flat bib straps with breathable mesh back panel
• Silicone leg grippers keep short securely in place
• Progetto X2 Air Seamless seat pad for endurance comfort
• Back pocket for storage or race radio
• Short fabric with UPF 50+ protection