The Ursack S29.3 MAJOR AllWhite (IGBC cert. no. 3738) is the larger version of Ursack's classic S29.3 AllWhite. The Major holds about 50% more food than its smaller sibling and weighs 8.7 ounces. Otherwise it is identical. The 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. The Major weighs 8.7 ounces. It is about 24 inches in circumference (<8″ dia.), 18.5 inches tall and holds about 925 cubic inches. The Major does not come with an odor barrier bag (OPSak) or an aluminum liner–neither of which are made to fit the Major. Two OpSaks would be required, and must be purchased separately. We highly recommend OPSak, which is designed to always be used inside the AllWhite. Without the optional aluminum liner, your food may be crushed or punctured. While the AllWhite is critter resistant, the Ursack Minor may be better suited for that task. See FAQs. The newest version (which is the only version we sell) of the AllWhite made since about April 1, 2015, dubbed the S29.3, has a tighter weave and more than double the tear strength of previous models. There is no good way to test its critter resistance, but so far it has been excellent. The Major is pictured here next to our standard size Ursack. The Ursack with improved Spectra seams (beginning April 2014) 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.