Bed linen is a product of the fabric used for decorating the bed. This concept involves a single set of woven fabrics. Usually it is a blanket, sheet, and pillowcase. All bed linen is divided into several categories, depending on the size of the mattress, pillows and blankets. It is single, double and sesquialteral. Traditionally, fabrics for bedding are cotton, flannel and silk. Flannel is the material that shows good thermal conductivity and hydrophilic, an unusually high strength and resistance to stretching. Cotton has been known since ancient times. Herodotus, who lived in the V century BC, wrote that the people of India know the plant, which instead of fruit gives the hair, whiter and softer than sheep. In ancient Egypt and ancient Greece, cotton fabrics began to spread only in the later period, and in Western Europe, they became popular in the home for the first time only in the 15-century. Cotton linens less durable and abrasion resistance than flannel, and it have good hygienic properties. Silk is a product of life for silkworms. Silk was not used for the manufacture of linens immediately: silk fabrics known in ancient Egypt and ancient Greece rather late. History shows that in different countries around the world bedding have their external features. So, pillowcases can be buttoned, zipped or have a valve-odor. Duvet covers are made in the form of an envelope or pocket, to be solid or slotted. Sheet in sets of bed linen may also be different. It may be normal or with an elastic band around the perimeter. The density of tissue (weaving yarns) bedding is also divided into several types. Weave density (number of threads per square centimeter), as a rule, must be indicated on the sets of quality linens.