Castelli have put all their best technologies into this exceptional tight. Progetto X2 Air Ladies-specific seat pad, and a mix of lightweight fabrics, including warm Thermoflex Core Due for the ultimate winter performance. Top Features of the Castelli Ladies Sorpasso Bib Tights Thermoflex and thermoflex core due fabric Progetto x2 air Ladies-specific seat pad for maximum comfort Thermoflex waistband for extra warmth Giro3 ankle grippers lie flat and seal around shoecover Ykk(R) ankle camlock zippers with reflective tape for high visibility Temperature Range: 0 degrees - +15 degrees C 264g (size Small) Windproofness Waterproofness Insulation Product Data Fit: Performance Style: Full Length Road: Yes By applying the technical advancement of hollow-core fibers, Castelli made these tights not only lighter than your normal tights but also warmer and they keep you drier. Ankle zips are YKK(R) Camlock, and covered with reflective tape for night visibility. Now you're ready to put in those long base rides all winter long.Progetto X2 Air SeatpadMaximum technology for supreme comfort; The Progetto X2 returns with ventilating perforations to keep you cooler and dryer on endurance road rides. The new design allows air and moisture to flow directly to the surface fabric for quick evaporation. The shape of the pad has received minor updates based on feedback from the Cervelo Test Team. The Progetto X2 Air seatpad is constructed in 3 layer components, each dedicated to a specific purpose to create the most comfortable seat pad on the planet. 1. Skin care layer: A four-way stretch, microdenier, seamless, bacteriostatic layer made to adapt to the shape of your body and saddle without any folds in the fabric. 2. Seamless integrated technology cushioning layer: Multi-density foam with infinitely variable thickness. The thickness of the pad is engineered to place the padding where you need it most for maximum comfort. 3. Viscous comfort inserts: Perforated viscous padding is added under the highly sensitive ishial and perineum pressure areas. Giro3 Leg GrippersSecure, low profile cuffs that stay in place without constriction. Instead of stitching silicone elastic to the hem, Giro3 cuffs feature gripper thread knitted directly into the band that holds the tights in place. It lies completely flat for improved aerodynamics.Thermoflex Core DueAn innovative fabric, designed to keep you dry and comfortable, even in cold and wet cycling conditions. A hollow-core polyester inner layer traps warm air, while wicking moisture to the outer nylon/Lycra(R) layer, where it quickly evaporates. Thermoflex Core Due offers better warmth and wicking than traditional fabrics, with a 20% weight saving. The hollow-core inner layer repels water, keeping your tights felling dry on the inside, even when wet.