SINGER-4 iron-on patches each 5"x5". Colors: navy dark brown dark green and black. Low heat-for permanent press and other fabrics. 100% cotton. Low heat directions. Use dry iron only-no steam. Washable and super sealing for mending and decorating shirts jeans skirts and jackets. Not recommended for use on nylon or rayon or fabrics made of monofilament (non-fibrous strand) polyesters.