On the 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 thick. However, the thickness does vary from disc to disc so if you need a particular thickness for your rawhide, please check with us beforehand. One natural thick SIDE cow hide measured 94"...