When we need a performance bib short that gives us lightweight warmth and moisture protection, our first choice is the Castelli Unlimited Thermal Bibshort. Made with Castelli's Nano Flex 3G fabric, we are protected from cold wind and moisture on the road in the fall and spring months. Mesh bib straps provide a comfortable and breathable upper, and three rear stretch pockets and two thigh cargo pockets ensure we can take along all our ride essentials. Reflective accents allow us to be seen in low light conditions, and reduced seaming adds comfort when we are in the saddle for extended periods.