The Ursack Major is made of “bullet proof” Spectra 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. Weight is 7.6 ounces. It is about 24 inches in circumference (<8″ dia.), 14 inches tall and holds about 650 cubic inches (10.6 Liters). The Ursack does not come with any Ursack accessories. The Ursack with improved Spectra seams passed the Interagency Grizzly Bear Committee test and was placed on its bear-resistant products list on July 31, 2014. That list is the one relied on by many, but not all, wilderness agencies, and restrictions may still apply–check first.