The SINGER large iron-on patch is sized to suit multiple needs, from mending clothes with multiple tears and small holes to repairing large rips or simply adding embellishment to fabrics. The patch, sized 7 inches by 16 inches, is iron-on, no sew required, and made of a polyester/cotton blend that is durable yet soft. Mending fabric is flat, with no telltale textures or patterns. Simply iron-on the fabric for a washable, super sealed mend. Not recommended for nylon or rayon fabrics.