Ferrino Silk Liner Mummy is a mummy sleeping bag that is ideal for use on your treks, trips and journeys with overnight stays in huts and hostels. Alternatively, you can also use it inside your sleeping bag for improved hygiene and thermal comfort. Thanks to the pillow pocket, you can rest even more comfortably. Since it is made of silk, it is part of Ferrino's most compact and lightest line of sleeping bags, so you can forget about it at the bottom of your rucksack and always have it available when you need it! Ferrino Silk Liner Mummy sleeping bag liner