How do I zip two bags together to make a double bag? TETON Sports August 18, 2020 19:41 Updated Related articles Which TETON Sleeping Bags can zip together? Are your sleeping bag zippers two-way? Can they be zipped open from the bottom up, or only the top down? How do I know if my TETON Sports sleeping bag is a right zip or a left zip? Do the Mammoth Sleeping Bags make two smaller sleeping bags? Why do my sleeping bags not match up at the top when zipped together?