Castelli Mortirolo Due Jacket If your lucky enough to live in a place that winter isn't all that cold or you want a great spring / autumn jacket, this could be the jacket for you. Based on last years Mortirolo but featuring a revised design & new fabrics. The Windstopper front has been upgraded to Windstopper X-Fast 2 while the back still features warmer fabric for great fit & breathability. The edition of zippered front vents increases ventilation & reflective tabs & new colours make sure your seen. Windstopper X-Fast 2 front wind protection Back in Warmer to prevent overheating Front zippered chest vents 3 external rear pockets Reflective tabs on chest back & pockets. YKK Zipper. Weight 380g Temperature Rangel: 8c-15c Buy Castelli Mortirolo Due Jacket from Chain Reaction Cycles, the worlds largest online bicycle store