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 (<8″ dia.), 14 inches tall and holds about 650 cubic inches (10.65 Liters). If packed only with freeze dried food, it will hold 37 single servings of breakfast, lunch and dinner.
We highly recommend pairing Ursacks with OPSak Odor-Proof Barrier Bags, which are designed to always be used inside the Major. The newest version (which is the only version we sell) of the Major made since about April 1, 2015 has a tighter weave and more than double the tear strength of previous models. 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. Note some areas may require hard sided canisters.
Limited Lifetime Warranty: Ursack will replace, or refund the cost of, any properly used Major in which a gap, tear or hole larger than 1/4 inch is caused by a bear. This 1/4 inch standard is the criteria used in the Interagency Grizzly Bear Committee’s test protocol. We ask that customers send pictures of any damaged Ursack to Ursack for inspection.
Note: Due to the difficulty in weaving high tech UHMWP, Ursack's supplier is not always able to deliver pristine black fabric (the only color available). Your Ursack may arrive with minor cosmetic blemishes. You won’t see these once you have used Ursack in the wilderness, and these in no way compromise the performance of the product. Some units may have different color thread or rope than those pictured.