Bed sheet

A bed sheet is a rectangular cloth used to cover a mattress and those sleeping upon it. They are the sheets which one typically lies between. In many places a second flat bed sheet is laid on top of the sheet covering the mattress. When a second sheet is used, the top one is known as the top sheet and the sheet covering the mattress is known as the bottom sheet, or "coupie sheet" in some European countries. If the bottom sheet is shaped and sewn to fit snugly over the mattress, it is known as a fitted sheet. Blankets, quilts, duvets, comforters and other bed covers are placed on top of the top sheet.

In some Asian countries, such as China, top sheets are not used. Flat sheets are often used in place of fitted sheets or together with them as bottom sheets. Families typically sleep with only a duvet covering them.

History

The term bed sheet was first used in the 15th century. Bed sheets were traditionally white and made of linen, cotton or silk, but now various colors and patterns are used.