Recover faster, and be ready for the next day on the trail, with the UL Recovery Sleeping Bag Liner. Sleep better with integrated CELLIANT® technology, clinically demonstrated to help you recover from fatigue faster. Pack this ultralight liner to help your muscles recover - while protecting your sleeping bag from dirt, odor, and body oils - and wake up prepared for the trail ahead. Features: - Use this ultralight liner to help you sleep more comfortably, recover more thouroughly, and perform at you best after a night's sleep in the backcountry - Whether you run hot or cold, CELLIANT® technology helps you stay at the right temperature while you sleep - CELLIANT® has been clinically demonstrated to increase local circulation, improve local cellular oxygenation, promote restful sleep, enhance performance, and speed recovery - Soft woven fabric makes you sleep setup even more comfordable in the backcountry or frontcountry - Stands alone as a packable layer for travel and warm-weather overnights under the stars - Durable, outside-facing seam construction is smooth and comfortable against your skin - Keep dirt and body oils out of your sleeping bag with this easy-to-wash removable liner - Easily reversible to fit right or left zip sleeping bags - Minimalist cinch-hood closure for one-handed temperature regulation - Stuff sack included