The Entrata Bibtight reflects the same obsessive drive for function, comfort and performance seen in Castelli’s tights, combined with high quality fabrics and components. Castelli’s Thermoflex fabric provides warmth and comfort, with Nano Flex and added water repellence. The tight has minimal seams for comfort, and the KISS Air2 seat pad features generous padding and quite possibly the softest surface fabric in the business. The luxurious warmth and stretch of this fabric will keep you comfortable on all but the coldest days, it's everything you need to comfortably enjoy dry winter rides.