The beautiful matte finish of Cotona in a heavier weight that is perfect for decorative serging. To make Cotona, Madeira begins with 100% pure Egyptian cotton that they double mercerize for outstanding sheen and astounding softness. The possibilities for creative expression and innovative designs are endless with 10 solid and 10 variegated color combinations. Cotona No. 4 is machine washable up to 140? F, dry cleanable and colorfast. Madeira s more traditional spool shape eliminates the drop off and tangling problems associated with the elongated spools many other manufacturers use. And, all Madeira spools come with double locking end caps to keep thread neat and tidy.