Bed sheet and bed covers

A bed sheet is a piece of linen or cloth that is used to cover the mattress. It is placed directly on the mattress and the sheet which a directly person lies on. The term bed sheet was first used in the 15^th century. In some countries a person places two sheets on the bed, one that is fitted placed on the mattress and one a simple sheet that is laid on top of the fitted sheet. The person then sleeps between the two sheets followed by blankets or comforters. Bed sheets are made by fibers such as cotton, linen, satin, silk, rayon, bamboo fiber. When the bed is not made, the bed has four or five layers of sheets that are used to directly protect the mattress and the comforter. There is a fitted sheet, a top sheet, followed by a blanket or a comforter and a bed cover.