FeaturesUltralight down mummy bags that feature expandable panels for customizable fit – patent pending Two zippered panels run from shoulder to footbox adding 5 inches of additional girth to each side (10" total) when opened Dual zipper sliders on expandable panels allow you to unzip from top and bottom to give you multiple fit adjustment options Body-mapped baffle construction optimizes thermal efficiency Jacket-style hood opening contours to the shape of your face for a comfortable, snug fit Low-profile cordlock lets you un-cinch the hood with one hand Insulated tube along upper hood opening seals out drafts when cinched Vaulted footbox construction provides more loft and warmth Regular Zipper Length: 65" / 165cm YKK #5 anti-snag locking zipper for a smooth, quick zip Long Zipper Length: 70" / 178cm YKK #5 anti-snag locking zipper for a smooth, quick zip 3-D anti-snag draft tube prevents heat loss along the zipper Zipper Garage Internal mesh stash pocket for phones and other little ditties Interior fabric loops for sleeping bag liners Streamlined exterior loops for hang drying or storage Storage sack & stuff sack included Construction + MaterialsUltralight polyester rip-stop shell fabric with a water-repellent finish Lightweight polyester taffeta lining featuring a wick finish that spreads moisture out for quicker drying and optimal moisture management 850 fill DownTek™ repels water while maintaining insulating value - bluesign® Certified PFOA and PFOS free water repellent chemistry Available in Left zipper