We ran into a hiker on the AT last year using a kevlar back to keep out bears and rodents. He said the product was an Ursack and seemed very happy with it. However he'd never had a bear try to get ...
I've read that in the western US, backpackers need bear canisters or bear bags, for bears or for other animals. For example, a post comparing different methods is here. I must admit I'm a bit ...