Developed to meet the demands of the performance cyclist. 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. When you swing a leg over a bike, the first thing you want out of your bibshorts is comfort. 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. And, of course, we´ve used our Progetto X2 Air Seamless seat pad so you can stay comfortable even on the longest training days. In the modern world of performance cycling, aerodynamics has quickly become one of the most important components. After countless hours in the wind tunnel, we´ve aero optimized the bibshort to give you a 3% decrease in CdA, making it the fastest Free Aero Race Bibshort we´ve ever created. This means every watt you produce can be used to make you go forward faster.Features:- Aero-optimized Forza2 Stretch fabric for maximum comfort and aerodynamic advantage- Aero-optimized fabric delivers 3% decrease in CdA- Lie-flat bib straps and a breathable mesh back keep you cooler- 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 protectionSpecifications:- Weight: 187 g- Temperature: 18°C - 35°C / 64°F - 95°F- Fit: RaceTechnology:Rosso Corsa:- Our Rosso Corsa label is only applied to the highest-level products we make. Every thread and fiber, every curve and contour is obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli's performance-enhancing apparel.PRO RIDERS:- Garment supplied to the Soudal Quick-Step Team riders.Progetto X² Air Seamless:- Maximum Technology For Supreme Comfort. Constructed in two components, each dedicated to a specific purpose, that together create the most comfortable seat pad on the planet. Skin Care Layer Seamless, bacteriostatic layer made to adapt to the shape of your body and saddle without any folds in the fabric. Cushioning Layer Seamless Integrated Technology (S.I.T.) Perforated Viscous Comfort Zone.