About the castelli nano flex legwarmer choose nano flex for warmers that are great in cool, dry conditions, such as for those in between days when there is likely to be a large enough fluctuation in temperature or effort to require warmers that can be worn or removed as required'. '.strtoupper('t')hese warmers also offer some extra protection and warmth in wet conditions'. '.strtoupper('t')hey have been treated with a nanofilament coating that prevents water droplets from soaking through the fabric'. '.strtoupper('d')rops of water stay on top of the fabric or bounce off without leaving a trace'. '.strtoupper('c')astellis proprietary nano flex is what makes these water resistant warmers possible and is often imitated but never equalled'. '.strtoupper('n')o compromises for any conditions'. '.strtoupper('k')ey features utilises castellis proprietary water resistant thermal and breathable nano flex fabric double sided silicone grippers to keep the warmers in place flat lock stitching with single seam for improved comfort rosso fuoco ankle zips about the brand castelli traces its roots back to a fine tailor vitore gianni in the heart of milan, founded in 1876'. '.strtoupper('t')hrough the years, vittore gianni clothed ac milan, juventus and the milan ballet'. '.strtoupper('t')he first cycling clothing was made in the 1910's for the world champion and five time giro champion alfredo binda'. '.strtoupper('c')astelli innovated the first aerodynamic lycra shorts in 1977 which were used in racing and for public sales'. '.strtoupper('c')astellis single minded mission is to make the most innovative clothing for the cyclists seeking maximum performance'. '.strtoupper('o')ver the past decade, castelli have led essentially every performance innovation in cycling clothing'. '.strtoupper('a')rm and leg warmers buying guide