Castelli Transition Womens Jacket is a lightweight winter jacket for fall and early winter riding. The lightly brushed jersey that has replaced the fleece lining found in most winter jackets makes the Transition feel like a lightweight, highly breathable jersey suitable for racing. The Transition Jacket is not designed for frigid weather, but the Gore-Tex Infinium X-Mid keeps away the chill that comes with wind. The same fabric has a high degree of stretch so the jacket fits like a race jersey. On the back, a warmer fabric maintains body heat while the breathability of the same fabric evaporates sweat. Three rear pockets provide lots of storage room while reflective panel creates high visibility when the sun is covered by heavy clouds.