Bib shorts live or die by their chamois, and the Competizione 2 Kit uses Castelli's Progetto X2 Air Seamless pad — the same insert found in their higher-tier bibs, positioned here in a short designed for riders logging serious hours without chasing the absolute lightest construction. The pad uses variable-density foam with a seamless topsheet that eliminates the stitched edges responsible for most chamois-related irritation on longer efforts. Castelli shapes the Progetto X2 Air specifically for the more aggressive position most road cyclists actually ride, rather than the upright geometry that cheaper pads accommodate.
The body construction pairs Lycra main panels with mesh bib straps that run wide across the shoulders before narrowing at the chest. This strap geometry distributes load across more surface area than thin straps can manage, which matters when you're three hours into a ride and every pressure point starts to announce itself. The mesh fabric handles moisture without holding onto it, so the straps don't become a sweat reservoir sitting against your skin.
Castelli uses their Giro3 leg grippers at the thigh opening — silicone-backed bands that hold position without the tourniquet sensation that comes from overly aggressive elastic. The grippers sit flat against the leg rather than bunching or rolling, maintaining a clean interface with your skin through repeated pedal strokes. Leg length hits a few centimeters above the knee on most riders, which is the sweet spot between coverage and freedom of movement.... Read More
The fit runs true to Castelli's standard sizing, which tends toward the performance end of the spectrum. If you're between sizes or prefer a less compressive fit, consider sizing up. The construction assumes you want the fabric to stay where it's placed rather than shifting around, so there's inherent compression throughout the panels — this is intentional and part of how the short performs, not a sizing quirk to work around.
Available in Black, Clay, and Twilight Blue, the Competizione 2 Kit works as a standalone bib or coordinates with Castelli's matching jersey options for riders who care about a unified kit appearance. The color selection runs toward versatile neutrals rather than high-visibility race graphics, which gives you more flexibility in jersey pairing.
