Our favourite jeans company, Naked and Famous, has made a pair of jeans out of the heaviest denim in the world. Two to three times the weight of your average high quality denim, these Naked and Famous jeans are made from 907g selvedge denim and are so heavy and rigid, the jeans can stand on their own.
Generally when I blow through a pair of denim, I just toss it out and never think of it again. But apparently, that pair of old, shredded jeans can be ground down to a pulp and reconstituted into a fresh pair of pants.