Micro- Art Silk Sleeping Bag Liner Micro-Art Silk is stronger and easier to care for than pure silk. Machine Washable, very fast air drying. Wicks moisture away from body. 6'-10.5" long x 1'-11.5" with a generous pillow pocket and side opening Ideal for hostels, ultra-light packing, extra layer in cold temps., or single layer in warm temps. Wash prior to first use to increase softness. Do not use fabric softener.