Natural wear comfort for your winter adventures. The Jack Wolfskin Women's Beluga Bay 3-in-1 Jacket is designed with superior wear comfort in mind. Jack Wolfskin have used their popular Function 65 hybrid as the outer fabric. This cotton-rich fabric has a natural feel and shuts out wind and light showers.Inside, there is a windproof, warmly insulated gilet, which is docked with the outer jacket via a System Zip. The gilet keeps your torso nice and warm. And if you get too warm, simply unzip the two components and wear the outer jacket or gilet on their own.