(1) Its upper of 2.8mm Idro-Perwanger silicon-impregnated roughcut leather comes from the corium , the section of cow skin just under the less-strong top grain.(2) How it comes to be is actually pretty simple: Underneath the epidermis, or covering of the skin, lies a connected structure of tissue known as the corium , and beneath that lies more matter called subcutaneous tissue.(3) The dermis or corium underlying the epidermis is 0.3 to 4.0 mm in thickness and may be divided into two layers, papillary and reticular.
