Make a beautiful, bolder statement on your quilting, serging, embroidery, handwork and other decorative projects with Sulky 12 Wt. Cotton Thread. It is 40% thicker than 30 wt. Cotton. All Sulky Cotton Threads are premier quality, long staple, highly mercerized Egyptian cotton with a matte finish to create a soft, warm, natural look and feel. ALL our cotton thread comes from 100% Egyptian Cotton that is grown in Egypt. Most critical to its quality is that it is dyed and finished in Italy, which is why you see “Made in Italy” on the cone.