Fleece fabric is one of the oldest knitted fabric designs that remains popular today. It has properties of being warm, cozy, easy to care for, washable, and can be produced at low cost using circular knitting machines. There are several types of fleece fabrics defined by the number of yarn threads used (one, two, or three thread) or the material (cotton, polyester, blends). Fleece fabrics are characterized by loops of yarn on the surface that provide insulation properties. They have many uses including outerwear, linings, and blankets.