Camping in the frozen Siberian plains? Then you must be sleeping in The North Face Tundra -20F Synthetic Sleeping Bag. The North Face packed this freezing wasteland dweller with Climashield Neo synthetic insulation to simulate a Carribean beach on the inside while the icy winds are blowing on the outside of your tent. Firestorm topshell fabric keeps the wet elements off, and a silken inner lining breathes well and feels oh so soft. Overlapping shingle construction and draft collars keep heated air from escaping and a stiff zipper column prevents snags and makes getting in and out easy. The zipper tab even glows in the dark, so sneaking out for a midnight poop becomes a little easier.