Flat round piece of goat skin with hair. Thickness: Medium- approximately 0.015 of an inch. This equates to the approximate thickness of 4-5 sheets of printer paper. All skins sold "AS IS". We do our best to eliminate skins that have possible defects; however, our prices are based on an "as is" basis. This means, on average, you can expect to lose one out of ten skins. Obviously the tightness during installation will alter this ratio, so figure this loss in your cost. (Available in Sizes::: 16", 18", 20", 22", 24", 26", 28", 30",)