Built for moderate winter conditions, the Castelli Semifreddo Bib Tight will keep you warm and protected without overheating. Thermoflex fabric on the upper legs are soft and stretchy for optimal comfort, while the lower legs are constructed with Nano Flex stretch woven fabric and a brushed fleece inside to repel water and regulate temperature. Its Progetto X2 Air Seamless chamois pad, minimalist mesh bib straps, and zipperless ankles ensure you stay extremely comfortable during your cool weather ride.