Women's-specific shorts tend to fall into two camps: scaled-down versions of men's designs with a different chamois, or ground-up constructions that acknowledge female anatomy requires more than a size adjustment. The Castelli Premio Evo W Shorts land firmly in the second category, building around the Progetto X2 Air Seamless chamois that Castelli developed specifically for women's sit bone spacing and soft tissue pressure patterns. This isn't the same pad you'd find in their men's shorts with different dimensions—it's a distinct construction that addresses how women actually contact a saddle.

The shorts use Castelli's Inferno fabric across the main body, which reads like a contradiction until you understand the naming logic: it's engineered for hot conditions, not to create them. The material manages moisture transfer aggressively enough that the shorts don't become a sweat trap during summer efforts, while the compressive fit stays consistent across long rides without the waistband roll that plagues lesser shorts. Castelli cuts these with their Premio fit, which sits between their race-day skin suits and their more relaxed training shorts—snug enough to eliminate fabric movement but not so aggressive that you're fighting the garment during position changes.

The leg grippers use Castelli's Giro3 silicone system, which distributes grip pressure across a wider band rather than concentrating it in a narrow strip that digs into your thighs. For riders who've experienced the particular irritation of leg bands that leave marks or create pressure points on longer rides, this detail matters more than it might seem from a spec sheet. The grippers hold position without requiring the shorts to be sized down for security.... Read More