Labels are intended to relay information about the product onto which they are affixed. Most labels are designed to be easily printed on so are flat and evenly planed. Usually label material is paper, plastic, metal, or fabric.Labeling serves a variety of purposes. Often it is intended merely to provide benign or helpful information related to the product. Other times a label may be used to provide direct instructions about how the product should be used or stored. Step by step instructions are also very common as a label subject. The most critical are the safety labels, which are almost always permanently attached to the product in some visible area. They are hardy and meant to last the life of whatever device they are attached to. An adhesive is usually the means by which labels are adhered to their respective products. Some are permanent and provide a solid seal whereas others are merely sticky and can be removed with little effort, like produce label stickers. In clothing and upholstery, labels are usually made of fabric and are sewn directly onto the material product, making them permanent. Metal labels can often be attached using fasteners, whereas plastic commonly is heated onto the product. Read more Read less