Design and Details Extra-luxe layer dreams are made of, literally Designed to regulate your temperature in a variety of conditions and uses Keeps your sleeping bag clean and protected while adding warmth Stands alone as a packable layer for travel and warm-weather overnights under the stars Features a generous 42" side opening; snap closed for increased insulation or open for maximum ventilation Easily reversible to fit right or left zip sleeping bags Minimalist cinch-hood closure Durable seam construction is smooth and comfortable against your skin Hooks located at the head and foot allow for easy attachment to sleeping bag liner loops Stuff sack included Cotton liner: 100% cotton Wool liner: 87% new zealand merino wool, 13% nylon for added durability Polartec recycled fleece