I'm reasonably certain that the one I used when I was a swimmer 20 years ago was the "Shammy" - http://www.shammysolutions.com/site/...product/100-01
That's basically a synthetic verision (says it's rayon) of "chamois". It had a feel somewhat like foam rubber (did not feel like fabric at all, whereas chamois does), but much softer.
The claim I have a hard time believing is the lifespan. It is better than a sponge, but like a sponge, when you wring it out, you leave a little bit of what you had soaked into it in it. Over time, that'll build up.