The Coleman Big Bay 0 Mummy Sleeping Bag is the perfect snuggle buddy for your next camping adventure. Equipped with Coletherm™ MAX Insulation to keep you comfortable in temperatures dipping as low as 0 degrees Fahrenheit, this sleeping bag will keep you warmer than a cup of hot cocoa on a winter night. For added versatility, the J-zipper lets you air out your dogs in warmer temps, too. Plus, the mummy-style design will make you feel like a cozy little caterpillar, ready to emerge as a well-rested butterfly in the morning.