A great choice for four-season campers, the Wenzel Windy Pass mummy-style sleeping bag offers a warm, comfortable night’s sleep thanks to its 0-degree Fahrenheit temperature rating. It’s filled with 56 ounces of hypoallergenic Omega II polyester fiber fill. The off-set quilt construction encapsulates the polyester fill between two layers of outer fabric to help reduce cold spots. It features a drawstring hood, a full-length 3 inch draft tube and a 3-inch internal shoulder collar to help keep the cold out. Other features include a self-repairing zipper and an oxford nylon stuff sack. Specifications: Size: 33 in. x 84 in. Fill: 56 oz. of non-allergenic Omega II Outer: polyester Liner: soft polyester pongee Storage: oxford stuff sack.