A shirt usually consists of a collar, shelves, back, yoke, sleeves, crotch (a triangular piece of fabric sewn at the base of the sleeve, between the shelf and the back). There are shirts with short (elbow length) and long (wrist length) sleeves. Among long sleeve shirts, there are shirts with button cuffs and cuff links with shirts. Most shirts have a single pocket on the left side, and are designed for everyday wear (unofficial ) may additionally have a pocket on the right
side, the presence of a valve on which, in turn, gives the shirt an even less official look.