Even temps below freezing are no match for the WarmCube™ Gallatin 20° Sleeping Bag - Long. The 650-fill-power down, synthetic HL-ElixR Micro™ insulation, and Pertex® shell fabric combine to provide superior coverage from the elements. Protected by a water-resistant layer of overlapping baffles, 3D WarmCube construction in the chest and footbox prevent down fill from being displaced and traps heat in the surrounding channels so you stay warm—exactly where you need to. An anatomically designed footbox, the two-way YKK zipper with a draft tube, and the hood with a drawcord further limit heat loss.