BEST TREATMENT IN MATERIALS, DESIGN, AND FIT. Weve put all our best technologies into this exceptional tight. Progetto X2 Air womens specific seat pad, and a mix of lightweight fabrics, including our warm Thermoflex Core Due. By applying the technical advancement of hollow core fibers, weve made these tights not only lighter than your normal tights but also warmerand they keep you drier. Ankle zips are YKKR Camlock, and covered with reflective tape for night visibility. Now youre ready to put in those long base rides all winter long. YkkR ankle camlock zippers with reflective tape for high visibility.