The Marmot Sawtooth 15 Sleeping Bag is a down sleeping bag for cold-weather camping and backpacking. The 650 fill power down is lightweight, warm, and treated with Down Defender for better water resistance in wet conditions. Snuggle in after a long day of hiking for a cozy sleep through the night. The dual-side zips make entry and exit easy, while the footbox zipper opens for extra foot space or can be closed for increased warmth.