Castelli Free Aero Race Bibshort, The Castelli designers studied and improved on every detail on this, the new Free Aero Race Bibshort. Every component of the Free: every fabric, every construction method, every stitch was appraised, considered, and redesigned in the pursuit of perfection.
The lines are still classic Free, but in fact only the mesh fabric in the bib straps carries over from the previous short. Every other component and aspect has been redesigned, obsessed over and rigorously tested until the designers were satisfied.
The key updates are in the seat pad, the bib strap construction, the waistband construction, plus all-new fabrics, and pattern work that went through a vast amount of iterations until fit perfection was achieved.
Obsession with comfort; The new fabrics are all softer than the outgoing fabrics, especially the new softer surface fabric on the updated Progetto X2 Air chamois. The innovative double V construction on the front keeps everything in place without compressing your stomach. And Castelli engineered a new Carré yoke that makes the straps lie perfectly flat.
Muscle Support and speed; In re-engineering the Free Castelli took a look at blood flow, providing just the right muscle support without constricting. The revolutionary Giro Air leg band provides more stretch and distributes the compression over a larger area. The body of the short uses 30% Lycra® for excellent return.
Aerodynamics was also considered, optimizing boundary-layer airflow with the Giro Air leg band and the dimples on the side fabric. The wind tunnel says it saves 10 watts at 50 km/h, but you’ll probably want to go even faster because your aero advantage will only increase.