Features: Synthetic-fill traditional mummy sleeping bag designed for versatile three-season use FireLine(TM) Pro Eco recycled synthetic insulation provides dependable warmth and compressibility Recycled shell and lining fabrics feature a moisture-repellent coating without intentionally added PFAS Traditional mummy shape reduces weight and improves heat retention Contoured hood follows the natural shape of your head for a more comfortable fit Oversized no-draft collar and no-draft zipper help seal out cold air Low-profile cordlock allows one-handed hood adjustment Insulated tube along the upper hood opening blocks drafts when cinched 65 in / 165 cm YKK #5 anti-snag locking zipper ensures smooth, reliable operation Two-way zipper with zipper garage positioned on the sleeper's left side Left-zip (All-Gender) and right-zip (Women's) bags can be mated together for shared warmth Interior loops secure a sleeping bag liner for added warmth (liner sold separately) Exterior loops allow for hang-drying or long-term storage