What is the writing material in bendy pencils?

Oh, dude, the writing material in bendy pencils is graphite, which is like the stuff that leaves marks on paper when you write with it. It's basically a mix of graphite and clay baked into a bendy shape, so you can write and have a little fun bending it too. So yeah, bendy pencils are like regular pencils, just more flexible... and fun to play with.