The Kelty Mistral 0 Degree Sleeping Bag is a synthetic sleeping bag for cold-weather backcountry adventures. The polyester taffeta shell and liner are soft yet durable and have been packed chock-full with CloudLoft synthetic insulation to keep you toasty through frigid nights down to zero degrees. Snuggle inside the comfort hood and wiggle your toes inside the spacious footbox to gain precious rest for the long miles you've planned for tomorrow.