Offering more room for car camping and backpacking comfort, The North Face Furnace 40deg sleeping bag is a less tapered, down filled bag perfect for trips in milder weather. . ProDown insulation provides ultimate warmth in variable conditions and is enhanced with a hydrophobic finish to repel moisture up to 10x longer than regular down. Anti compression bottom layer composed of Heatseeker Eco synthetic insulation creates an insulating buffer and increases thermal efficiency Heatseeker Eco is composed of 30% post consumer recycled material, offers great warmth to weight ratio and compressibility, and is extremely durable. Vaulted foot box allows natural foot movement and eliminates excess lateral space for greater thermal efficiency and comfort. Shaped hood offers greater comfort and more warmth. Draft collar and zipper draft tube prevent heat loss and increase comfort. Full length, two way, anti snag zipper features a glow in the dark zipper pull. Includes compression sack and storage sack.