The Torchlight series features two expandable panels from shoulders to footbox, increasing sleep space up to 10 extra inches! Depending on your sleep style and body shape, you can adjust the bag for customized comfort based on your sleeping preference. Ideal for backpackers looking for additional comfort in a mummy bag but simple to use when car camping and catching z’s at any campsite. This bag is insulated with DownTek water-repellent down, and baffle construction that provides more efficient heat distribution with zero heat loss, even when the bag is expanded.