The Ursack Major (which replaces and is identical to the S29.3 AllWhite (IGBC cert. no. 3738) 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. It is about 24 inches in circumference (