The Castelli Free Aero Race S Short is engineered for cyclists who demand both speed and comfort—from local training rides to the most competitive races. Built with aero-optimized Forza2 Stretch fabric, the short delivers a compressive yet non-restrictive fit that moves fluidly with each pedal stroke. The fabric is the result of extensive wind tunnel testing and offers a 3% reduction in CdA, making it the fastest Free Aero Race Short Castelli has ever produced. Every detail is tuned for performance, allowing more of your power to translate directly into forward motion, especially critical on race day or during high-output training sessions.

While aerodynamics are key, long-ride comfort remains a top priority. The Free Aero Race S Short features the Progetto X2 Air Seamless Donna seat pad, designed to offer plush support over extended hours in the saddle. Silicone leg grippers keep the short perfectly in place without digging in, while the high-stretch fabric provides excellent freedom of movement and muscle support. With a race fit, UPF 50+ sun protection, and a lightweight construction at just 192g, this short is ideal for warm-weather riding in temperatures from 15°C to 35°C (59°F to 95°F). It's the perfect fusion of speed, support, and enduring comfort.