Ferrino Yukon Pro is an ideal sleeping bag for the middle seasons, for your trekking and camping. Its pudding is lighter in terms of weight and quantity compared to all those of the same line but is composed of two layers: this gives Yukon Pro good thermal capacities reaching up to -15 °. But let's talk more specifically: its synthetic fiber HTF Performance (High Thermal Fiber Performance) is odorless, hypoallergenic but above all washable. Furthermore, its individual fibers are hollow inside and the seams are staggered and therefore do not communicate between the external ones and the internal ones: this means that there is no heat loss. Its mummy shape helps to keep the heat inside but if you are hot there are no problems. Ferrino has in fact thought of everything and has created the two-way zipper to open the foot area and adjust the internal temperature. Ferrino Yukon Pro sleeping bag