Cosy legs is a multipurpose down liner. It may serve as the ultimate sleeping bag upgrade, a standalone short sleeping bag for summer nights or possibly paired with a down jacket for ultralight full body heat. Cosy Legs is a unique down liner that boosts the performance of your existing sleeping bag on cold nights. Extremely useful in sudden cold situations or simply to upgrade an old or thin sleeping bag with extra temperature span and that fluffy down feeling. Cosy Legs has a small pack size for easy travel and even doubles as cozy travel pillow when packed. A true travel companion in cars, airplanes and when experiencing the great outdoors.