Castelli Alpha Jacket – Redesigning the Winter Jacket

Throw out everything you think you know about cycling jackets and redesign the way a jacket should be made.
The Alpha Jacket is windproof and water resistant thanks to it's Windstopper's 150 fabric material. But the real innovation on this jacket is the detached insulating layer which stays close to your body when you unzip the jacket so your core doesn’t get blasted with cold air.