On the full cow skins, there are variations in the thickness of the skin. The neck is very thick and the bellies are thinner. The cow rawhide was de-haired, cured, stretched, and dried. They come rolled up.
The Sides (half hides) average between 17 and 20 square feet. The Thick rawhides are 2-2.5 mm thick.
Rawhide is also referred to as parchment or vellum.
Cows are not an endangered species. The rawhide is a by-product of the food industry. The cows are not killed just for the skin.