Full Grain Leather Dog Collar - Hand Made in Topanga, Calif.This dog collar is made out of natural 8 12 oz full grain leather which is naturally tanned using tannins from tree bark (made by boiling the bark in water, just as tea and coffee are made), limestone, and oils from fish and animals. The organic nature of the leather is ideal for a dogs collar in addition to being the most biodegradable of all leathers. We tested a new collar and leash with Rover and he loved it. Leather color and nuances vary. We use