Sulky-Cotton Slimline 2014 New Colors Dream Assortment. The perfect collection for your embroidery projects and more! With a wide range of colors, you can create multiple designs with ease. This package contains sixty-four 500 yard spools of sulky 100% premium long-staple Egyptian cotton thread in an assortment of colors within one 14x13-1/2x2 inch clear case. Imported.