About the castelli transition soft shell jacket the castelli transition jacket is the lightest jacket in the castelli collection'. '.strtoupper('i')deally suited to mild and drier winter days or cooler spring and autumn conditions'. '.strtoupper('t')he front offers protection from wind and showers while the breathable back stops you from overheating'. '.strtoupper('t')he front of the jacket and sleeves, as well as the shoulder yolk, are all in gore tex infinium x mid fabric a windproof fabric with a very fine brushed lining and a durable water resistant dwr front face'. '.strtoupper('t')his offers great protection and a little more warmth than the similar fabrics used in the gabba, perfetto etc'. '.strtoupper('k')ey features gore tex infinium x mid fabric covers the front and sleeves offers great protection and warmth the back of the jacket is in jersey weight thermal warmer fabric offering great stretch and breathability worn over a just a base layer the transition jacket will still be comfortable up to about 15cthe jacket cut means you can layer underneath for much cooler conditions 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 cyclist seeking maximum performance'. '.strtoupper('o')ver the past decade, castelli have led essentially every performance innovation in cycling clothing'. '.strtoupper('c')astelli men's jacket sizing smlxlxxlxxxlchest92cm96cm100cm105cm110cm115cm waist80cm84cm88cm93cm98cm103cm cycling jackets buying guide