Ferrino Pro Liner Mummy is a mummy sheet bag ideal for use in your trekking, trips and overnight stays in refuges and hostels. Alternatively, you can also use it inside your sleeping bag for greater hygiene and to improve thermal comfort. Access to the bag is facilitated by the side zip and thanks to the pillow pocket you can rest even more comfortably. Being made of satin polyester, the weight and size are really reduced to the minimum, allowing you to forget it at the bottom of the backpack and always have it available when you need it! Ferrino Pro Liner Mummy sleeping bag liner