You have probably seen, worn or heard of these jeans. They are called Draggin Jeans and they take the humble denim jean and place a kevlar liner inside to save your skin (and any other precious ligaments). Over the years they have made some big claims about these jeans but have backed it up by dragging people on their backside to show how durable they are (that will do it). Heres one of the latest video of the Draggin Jeans Drag Test.
[I find it funny that the guy in the pic below is wearing shorts. They couldn't give him a pair as well?]