Slumberjack SJK Ronin 0-Degree Sleeping Bag, Tan Layered, offset, quilt construction prevents cold spots Draft collar prevents heat loss from neck and shoulder area Draft tubes along zippers keep out cold air and prevents heat loss External Velcro tabs combined with dual zippers create "arms out" functionality Contoured jacket style hood- can be inverted to create a pillow on warm nights Dual side zips for ventilation and comfort Offset layer construction with dual draft tubes External Velcro tabs combined with dual zippers create "Arms Out" functionality Warm jacket hood converts to pillow Single length bag fits up to 6 ft. 4 in