 You know, these typical carbon fiber blades, as we call them. Tried it for the first time in 2003 and I ran around the track and I could not believe how natural it felt compared to this clumsy, clunky, awkward prosthesis that I'd been bashing around in for the last year. And it was extraordinary. I was like, my God, this is what I remember. This was as close as I remember running to be like.