Bee, those are obsolete Ursack models. The latest is the S29 All White weighing 7.3 ounces. Not that it matters. I'm betting on the Grizzly if it's left on the ground where the knot is vulnerable. The fabric will be fine. This design needs the knot protected by tying off to a tree or rock.
I hope I lose my bet. Have a bad day, Grizzly.
