100% Silk sleeping bag liner. The Silk Sleep Sack helps add 10-12 degrees to your sleeping bag, keeping you warm on chilly nights. Plus it's ideal for use as a stand-alone sleeping sack when staying in hotels, hostels, or anywhere you sleep. Silk is a natural and breathable material and provides a luxurious and comfortable sleeping environment. It also comes with a new twist – an attached waterproof stuff sack, it prolongs the life span of your liner and is great for storage.

•Weight: Less than 5 oz.
•100% silk.
•Waterproof stuff sack included.
•Color: Navy blue.
•Pillow compartment included.
•Side/top entrance.
•Use in any style sleeping bag.
•Ties included on each side for a snug fit.