Castelli has been consistently maintaining and improving many of their best garments. The Premio Bib Short has been engineered to provide the ultimate in long-distance comfort and to be your favorite bibshort ever. That's a big claim, but there's a lot of research and development in this short to back it up.

Construction of the short is driven by performance and comfort and is largely through the reduced seams and only 3 panels. Castelli engineered a new fabric, named Gradient, that changes depending on the needs over various parts of the body. The lower leg has a raw-cut leg ending and rubberized yarns to guarantee a flat grip to keep the leg in place. The fabric becomes lighter in the thigh, while the four-way stretch provides just the right amount of muscle support. In the pelvis area, the compression and support increase to keep the seat pad and everything else in place.

At the back there’s a thicker fabric to avoid any transparency issues. The premium fabrics extend to the bib straps. The perforated (open mesh) back keeps you cool and the edge is bonded so you don’t feel the thickness of a stitched edge. The elastic straps have just enough modulus (return) to hold your shorts securely in place without cutting in to your shoulders. Castelli carried the less-is-more theme into the design, with minimalist laser-etched logos and subtle finishing. It looks as premium as it feels. You can tell that every component, every stitch, every detail has been obsessed over. You'll not find a better bibshort for every ride you tackle, which makes it unique as true comfort and performance are rarely found in the same option.

The short portion also now carries the excellent Progetto X2 Air Seamless chamois pad. The anatomic design and 4-way stretch suits the cut and stretch of the short perfectly. The breathability from dedicated perforations within the edge padding dispel moisture and heat to keep your as fresh and dry as possible, while the soft, seamless top sheet stretches and moves with the skin. The soft microfiber also features a bacteriostatic treatment that helps to keep your skin healthy. The multi-density, variable thickness foam padding has been placed and sculpted for optimal comfort, while reducing bulk where it isn't required and under the sit bones perforated viscous inserts add an extra layer of protection. This premium-grade performance comfort chamois pad will carry and protect you all day long, and then again the next.