Calfskin is a leather or membrane produced from the hide of a calf. Calfskin is particularly valuable because of its softness, and fine grain, as well as durability. It is commonly used for high-quality clothing, shoes, wallets and similar products, as well as traditional leather bookbindings. In Spanish, the word is "Novillo", referring to leather from animals less than three years old. Chickenskin, despite its name, is actually a form of calfskin made using the skin of unborn calves.