The Evoluziones use Castelli's ProDry2Strati fabric, not an off-brand stretch knit. This fabric features a two-layer construction that wicks moisture from your skin to the exterior of the knickers so that it quickly evaporates to keep you dry. As far as fit, the Evoluziones were sewn to conform to your body while you are in the riding position. Additionally, double needle stitching means that the knickers are durable so that you can put them through their paces. The leg openings feature in-mold silicone leg grippers which keep the shorts securely in place.
Castelli is known for its chamois, and more importantly for designing its cycling shorts from the chamois, up. The Kiss Air Donna, which is used in the Evoluzione Knickers, is no exception. This insert features a soft, brushed microfiber top that rests comfortably against your skin. This layer is seamlessly engineered so as to eliminate chafing and abrasion. Additionally, the insert has been designed with a flexible shape that moves with you.