Mackwrote a review of Ursack Ursack Major on October 14, 2019
Familiarity: I've used it several times
Ursack is a great bear and critter proof bag. The sack has held up well for the many trips I have taken it on. The food sack is a great alternative to the heavy bear canisters. It does take a few times of playing around with the knots, once you get them down it is very simple, and hanging food from a tree is a breeze. This Kevlar sack is a nice addition to ultra-light backing weighing under 8oz. This sack can easily store between 4-5 days of food nice and easy, depending on your backpacking food choices.
Not odor proof
Not water proof
Accessibility, having to untie knots when you need to get something out
Not National Parks rated for bear canisters