It's basically a self adhesive bandage with a camo pattern. Typically they are used to camo guns and other hunting gear. The stuff is brilliant, just stretch it over and wrap. It sticks to itself but nothing else.
That first pic is my lion's mouth. It is wrapped with the stuff Wu Jim sells. I usually add a roll or two when I place an order. I can usually get 3 to 4 or more frames worth of wrapping out of one roll. It does eventually wear and need to be replaced. 3M also makes a product called "VetRap" that is basically the same thing and available in a multitude of colors and widths.