These bibshorts are made for racing. They offer muscle support, an aerodynamic fit, minimised weight, comfort to let you concentrate on wringing energy from your legs, and leg grippers that don’t cut off blood flow to your muscles. Even the printable spaces are optimised to keep your sponsors happy. This is the closest Castelli comes to a sized-down version of the men’s shorts. These Free Aeros are made for female racers, with the emphasis on "racer'. They have a female-specific fit, bibs and front construction; and Castelli's Progetto X2 Air Donna seat pad. Castelli's test crew has naturally included some non-racers, and the first thing they comment on is the comfort. These will be your go-to shorts even when you don’t have a number pinned on your jersey.