Extremely lightweight and roomy sleep sack or sleeping bag liner for hotels, youth hostels, alpine huts, boats, planes and trains.Fine yarn and special weaving technique make our high quality cotton a very lightweight and durable fabric. It is breathable, very comfortable against your skin and creates a natural vapor balance. Cotton is durable, machine washable and colorfast. Machine wash. Do not bleach. Dry cleaning, tumble drying and ironing are possible. Wash colors separately.