FOR CYCLISTS LIVING IN TEMPERATE CLIMATES. If you're lucky enough to live in a place where winter isn't all that cold, this is your jacket. The Mortirolo is basically a jacket made in two parts. The front uses our Windstopper X Fast 2 fabric to provide total wind protection and water resistance. However, cyclists living in temperate climates don't require full windproof coverage so the back of the Mortirolo is made from our Warmer fabric to keep you warm while wicking moisture away to keep you dry. This combination of windproof and permeable materials protects your body from the wind, yet helps you avoid overheating. Breathability is further enhanced by the addition of two vertical zippers on the front of the jacket. The YKK camlock zipper stays flat while the zipper pull is down, and rear reflective tabs improve visibility on gray winter training rides.