My point is that there are still many places where the Ursack--even the model on the IGBC list--is illegal. It seems that each jurisdiction--National Park or National Forest--gets to decide what is legal and what isn't. None are required to follow the IGBC list. In the national parks of the Sierra Nevada, for instance, using an Ursack will not only get you a hefty fine but an escort out of the park. Using one in Olympic National Park, except in an site where there are still bear wires and you hang it like a regular bag, will also get you a fine. Unless the website for the specific park or forest states that your bear container must be on the IGBC approved list, it's best to call when planning a trip!

It's only two years that Ursack has been producing the IGBC approved model (April 2014 per the Ursack website). I keep running into people who think the older models are OK. That's why your mention of a "few years" triggered my comment.