Castelli Nano Flex Pro 2 BibTight is the best all-around tight in the Castelli family. With its new Nano Flex Xtra Dry fabric, the Castelli Nano Flex Pro 2 Bibtight brings its highest level of water protection and warmth. It's constructed with fewer seams reducing the chances of water coming in and reflective waterproof splash guards on the inside of the lower legs for added water protection as well as visibility. For those serious training sessions a Progetto X2 Airpad was designed with the tight so you are comfortable for those long hours on the saddle. Rain or shine, the Castelli Nano Flex Pro 2 Bibtight provides water protection without sacrificing breathability and stretch.