NEBO Sports Teton -10 Degree Mummy Sleeping Bag (Oversize) Oversized mummy-style sleeping bag measures 90 x 34 x 22 inches Temperature rated to -10 degrees Fahrenheit FeatherLoft hollow fiber fill uses single-channel micro denier insulation for air capture and increased loft Curve in zipper makes it possible to close the bag by zipping up and across the body Oxford nylon compression sack for storage