A top of the line down sleeping bag typically used by mountain climbers. Good to -25 degrees. Climbers have used this type of bag to climb Mt. Denali or Mt Everest (when wearing down gear inside it). Only used 3 times–excellent condition, no marks. Used in -20 degree weather and was comfortable. The item “Feathered Friends Peregrine (-25 degrees) Down Sleeping Bag-mummy style” is in sale since Sunday, September 9, 2018. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “fbot3797″ and is located in Bellingham, Washington. This item can be shipped to United States.