Castelli Team Sky Free Aero Race 4 Bib Short

Based on Team Sky feedback and the Castelli team’s constant testing and drive to improve on the short, the 2019 Free Aero Race bibshort features some dramatic, performance-enhancing changes.

New dimpling on the legs stops air attaching to the fabric so that air comes off cleanly. There’s a new leg gripper that features a lie-flat raw-cut edge but now has vertical silicone stripes to keep it in place without restricting stretch and leg movement.

Castelli has updated the seams to improve the fit and make the short look even cleaner. The team has re-engineered the bib straps with new lighter, more breathable material so they stay cooler, lie flatter and are more durable. A new loop for race radio microphone was added at the request of team riders.

The Bibshort also features Castelli’s brand new Progetto X2 Air seamless seat pad, which features a two-piece design. The supportive foam core is slightly narrower and smaller than before, this is because the design’s flexibility and elasticity mean it sits exactly where it needs to be – meaning it doesn’t have to be wider than the saddle. The upper layer is dimpled to reduce full skin contact, encouraging air to drive moisture away from the body.