Rod Wraps?

What is a rod wrap? Obviously I've not tried them.

If these are the RodWraps he was talking about, then I know they are used on golf putters and tennis racket grips with success. The only advantage I could see over cork grips on rod handles is you can color code your rods. That's assuming you have enough of the same identical rod/reel combos to color code. Too bad they don't have pink, cause Delw would be all over them.