The Sorpasso knickers are identical to their Sorpasso full length tight counterpart in every way except the legs are cut shorts making them knickers instead of tights. They have a wide 32°-60° temperature range, incredible durability and an undisputable value. The value is so good in fact, the Sorpasso has bested many other knickers regardless of their price. The Sorpasso Knickers receive Castelli's Rosso Corsa designation which means it is a top tier Castelli product which receives their best stitching, best pad insert and finest anatomically cut materials.
The Sorpasso's front leg panels are constructed of Thermoflex Core Due which does a great job at keeping your legs protected from the elements. Thermoflex Core Due is a core Castelli cold weather textile and for good reason. It provides both windproofing, wet weather barrier and warmth/moisture control through hollow core fibers. The back and uppers use standard Thermoflex where supreme weather protection is not required. Thermoflex in all of its forms is super elastic, so when cut and stitched in anatomical patterns, Castelli can achieve a tailored-like fit. In addition to fit, Thermoflex also provides excellent muscle compression. The flat, thin and elastic suspenders are the familiar Giro++ design that provide support, while staying low profile. The bottoms of the tights are finished off with the elastic Giro3 bands which grip without being too tight and restrictive.
Since the Sorpasso is a Rosso Corsa product, it receives Castelli's best insert, the Progetto X2. This insert is designed to disappear beneath the rider. It has two distinct components. A skin care layer that is bacteriostatic, soft, elastic, seamless and is designed to prevent chafing. The other feature is the cushioning layer that features variable thickness with extra viscous padding beneath the sit bones and perineum. Castelli has always had a knack for getting the chamois fit and profile just right and their inserts are seeked out by riders worldwide. The Progetto X2 is no exception and is their best offering to date.