The Ursack Major (IGBC cert. no. 3738), which replaces and is identical to the S29.3 AllWhite, is made of ultra-high-performance UHMWP fabric and is designed to prevent bears from getting your food in their territory. It comes with an integrated six-foot, 2,500-pound tensile strength cord. The Major weighs 7.6 ounces. . If packed only with freeze dried food, it will hold 37 single servings of breakfast, lunch and dinner.