Introducing nano flex xtra dry fabric'. '.strtoupper('e')ight years have passed since castelli pioneered nanotechnology coatings in cycling clothing to provide a higher level of water protection without sacrificing breathability or stretch'. '.strtoupper('t')hey never stopped working on improving the fabric, and after numerous small improvements they are ready with the first major update the base fabric is a tighter knit double layer construction, and the water repellency treatment is improved to offer even more protection'. '.strtoupper('t')he castelli nano flex pro 2 represents a significant improvement in making your foul weather riding much more comfortable'. '.strtoupper('t')his will also be your go to tight for dry conditions'. '.strtoupper('i')ts a no compromise piece for all your cool weather riding'. '.strtoupper('i')ts not just about the fabric, though'. '.strtoupper('t')his is a serious training tight, so it gets our progetto x airseat pad'. '.strtoupper('f')or total protection in the high splash area of the inner leg, castelli use a fully reflective waterproof fabric that adds a high degree of night time safety to this tight'. '.strtoupper('t')he tight is constructed with the bare minimum of seaming, which helps keep the rain out and makes it more comfortable'. '.strtoupper('a')lways pushing for better castelli state that this is the best all around tight that we know how to make with todays technology, but were still working to make it obsolete as soon as possible.