versatile sleeping bag liner, travel accessory, or lightweight cover-up From couch-surfing sessions, to warm weather nights under the stars, this cotton liner is the perfect travel companion. Cotton/polyester blend is soft against skin, and is ideal for adding the extra warmth you need to a sleeping bag, or on its own as a barrier between you and a mattress on warm-weather overnights.Layer this cozy cotton liner inside your bag to keep cozy with a little extra warmthStands alone as a packable layer for travel and warm-weather overnights under the stars100% cotton without chemical treatments is gentle on your skinFeatures a generous side opening that can be tied closed for increased insulation or opened for maximum ventilationKeep dirt and body oils out of your sleeping bag with this easy-to-wash removable linerEasily reversible to fit right or left zip sleeping bagsMinimalist cinch-hood closure for one-handed temperature regulationDurable seam construction is smooth and comfortable against your skinStuff sack included