Japanese brand Zoo Jeans found a new, interesting, and straight-up incredible way of producing ripped-up denim. Zoo Jeans, which is comprised of local zoo supporters, wrapped tires and logs of wood with denim fabric and let tigers, lions, and bears from the Kamine Zoo go HAM. 

The fabric was then cut and stitched to make three styles of jeans—the T1, the L2, and B1—each one with rips and fraying courtesy of the animals. All proceeds from the sales of the jeans go to the World Wildlife Fund and back to the Kamine Zoo to benefit the animals. If you want a pair, the jeans will be auctioned off to the highest bidder, beginning this week on Japan's Yahoo auctions.

Check out the video above to see how it's done. 

[via Esquire]