The Castelli Sanremo 4.1 Light Black Speedsuit is a game - changer in road cycling. It combines the aerodynamic performance of a TT suit with the comfort, functionality, and moisture - management capabilities essential for long road rides. With over a decade of development on WorldTour roads, this suit has set the standard for pro riders since 2011. The front - opening design, copied by other manufacturers, is just the start. We've refined every detail to create the ultimate race suit. The CFD - based seaming and wind - tunnel - selected fabrics make it extremely aerodynamic. The body fabrics keep you drier and cooler than regular Lycra, ensuring comfort even on the toughest race days. The lower part is our Free Aero Race 4 bibshort, offering unparalleled comfort. We've also improved the pockets for racing. They're narrower for better aerodynamics and now feature two large pockets for easier access. The Castelli collection version uses dyed fabrics, giving richer and more saturated colors. Product features include CFD - based fabric placement, engineered aero efficiency from 30 to 55 km/h, airflow shoulder construction, Velocity Rev2 fabric on the front and sleeves, 3D mesh back for breathability, elbow - length stretch sleeves, YKK Vislon zipper, two floating - design pockets, Vortex fabric on legs, Forza fabric on inner legs with 38% Lycra for a perfect fit, GIRO4 leg gripper elastic, Doppio V construction in front, Progetto X2 Air Seamless seat pad. It weighs 285 g and is suitable for temperatures between 15°C - 35°C (59°F - 95°F) with an aero fit.
Using your Castelli Sanremo 4.1 Light Black Speedsuit is straightforward. First, put on the bibshort part like you would any cycling shorts. Make sure the leg grippers fit snugly but not too tight to avoid discomfort. Then, zip up the front of the suit using the YKK Vislon zipper. The suit is designed to hug your body for an aero fit, so don't worry if it feels a bit tight at first. When riding, the two large pockets on the back are great for storing small items like energy bars or your phone. Just reach back and you can easily access them. As for care, always turn the suit inside out before washing to protect the fabrics. Use a gentle cycle with cold water and a mild detergent. Avoid using fabric softeners as they can damage the performance of the fabrics. After washing, hang it to dry. Don't put it in the dryer as the heat can shrink the suit and ruin its shape. With proper care, your suit will last for many races and rides.
