Perform Down Bag. Enjoy a restful sleep. You will feel like you're in bed. Aiming to meet the natural needs of sleep, this sleeping bag focuses on noise, space and temperature; at the head it has a special fabric that does not make noise. The design of this sleeping bag is based on the natural sleeping position, thus ensuring sufficient space. The central zip ensures optimum thermal regulation. Perform Down Bag. The performance-oriented sleeping bag for hours of well-deserved rest.