https://www.backpacker.com/gear/essentials/adotec-bear-bag-review/

Happy6 and I skipped the Ursacks. While for our first AT shelter use we had ratsacks to protect our food, bags never seemed like something to trust against bears.
The Adotec has been grizzly certified and is waterproof. So for our next trip (not counting the Sierra section—hard sided canisters only) we decided to try these.
It is crafted from woven Dyneema® Fabric with a waterproof coating, and it is backed by rigorous IGBC certification (#245493).
Ursack failures have become commonplace. Which is why we opted out of those but are hopeful for this. Especially before bears get acclimated to them.
To use the Adotec you need a specific knot. Here is how it is tied.

