Big Agnes Torchlight 20 Sleeping Bag (600 Downtek) - Women'sTraditional down mummy bags that feature expandable panels for customizable fit patent pending. Dual zipper sliders on expandable panels allow you to unzip from top and bottom to give you multiple fit adjustment options or expand the overall bag circumference by 10". A contoured hood follows the shape of your head for a more comfortable fit. Insulated tube along upper hood opening seals out drafts when cinched. No draft collar and no draft zipper.