Stay warm in deep freeze environments with this Mil-TecA(R) 2-Layer Sleeping Bag. Dual-layer hollow fiber fill provides excellent insulation, even in temps below zero. Mummy design and integral hood further minimize heat loss. Water-resistant polyurethane-coated shell 2-layer hollow fiber fill (500 g/mA^2) Mummy-style design with integral hood and thermal collar Two-way zipper with draft protection Comfort range: -5AdegF, Extreme range: -10AdegF Includes stuff sack