Wenzel Windy Pass 0-Degree Mummy Sleeping Bag Shell;: 100% Polyester Liner Fabric: 100% Polyester Insulation Type: 100% Polyester Fiber Imported 0 temperature rating 56oz of non-allergenic Omega II fill, with offset quilt construction to capture warmth Oversize 33" wide by 84" long Polyester outer with soft polyester pongee liner Full length 3 inch draft tube and 3 inch shoulder collar