Torsion control systems resist unwanted fabric twisting

Built for elite performance and refined through rigorous wind-tunnel testing, the Castelli Men's Free Aero Race S Bibshort delivers top-tier comfort, aerodynamic efficiency, and race-ready support. Crafted from Forza2 Stretch fabric, this bib molds to your body without restriction, optimizing mobility while enhancing airflow for a 3% reduction in drag (CdA). The lightweight mesh bib straps minimize bulk and maintain breathability during high-output efforts, while silicone leg grippers ensure a secure fit through every pedal stroke. The Progetto X2 Air Seamless seat pad provides unrivaled cushioning and support for long rides, and a discreet rear pocket adds practical storage for essentials or a race radio. Whether racing or training, this bibshort is designed to help you ride faster, farther, and more comfortably.

• Aero-optimized Forza2 Stretch fabric enhances comfort and reduces drag
  
• Progetto X2 Air Seamless seat pad for all-day endurance support
  
• Lightweight stripe mesh bib straps for breathability and minimal weight
  
• Silicone leg grippers ensure secure fit without constriction
  
• Integrated back pocket for extra storage or race radio
  
• Fabric rated to 50 UPF for sun protection
  
• Main fabric Material: 65% polyamide, 35% elastane
  
• Back Material: 94% polyester, 6% elastane
  
• Bibs Material: 58% polyamide, 42% elastane
  
• Seat pad Material: 87% polyester, 13% elastane
• Care instructions: Machine wash cold, do not tumble dry

Thermoregulating membrane adjusts to body heat fluctuations dynamically