With the Coleman cold weather sleeping bag you can sleep comfortably, even in temperatures down to 20ï¾° F (-6.7ï¾° C) outside. The contoured head with Comfort Cuff ï¾ stitching surrounds your head in softness. The specially-designed, patented zipper system plows the fabric away from the zipper to avoid snags and zips up all the way every time. The Coleman cold weather sleeping bag’s Thermolockï¾ System reduces heat loss through the zipper. When youï¾re ready to pack up, the Roll Controlï¾ loop fasteners help you perfectly fold the sleeping bag and the Wrap-N-Roll feature contains the built-in storage bag.