I've looked and looked, and can't come up with anything specific...just that a bear resistant container is required.

so that brings me to wonder

Who defines Bear Resistant?
does it need to be listed by IGBC? I can't find anyplace that says it does....
would an Ursack fit the bill?
Could I make my own cannister?

Honestly, I'm more interested in getting something rodent and racoon resistant... even perhaps more for use here locally in Florida or elsewhere not in bear country...so I'm thinking something like a ratsack.
but
I figure if I buy something maybe I should try to get a lightweight canister in case I ever want to hike the smokeys or Blood in the spring....
or just take my chances, keep it simple, and hope a rodent or coon doesn't climb down the line to my hanging bag....