SULKY-Embroidery Slimline Dream Assortment. This assortment contains 104 of Sulky's most popular 250 yard slim spools of Sulky 40 wt polyester thread, a top quality, strong, 100% polyester, shiny thread that is especially suited for applique and embroidery on children's clothing, work clothes, sports clothes, or any garment that will need to be washed frequently and a super convenient molded plastic transparent carry/storage case measuring 14-1/2x14-1/2x2-1/8in with a variety of storage options: closed, partially open on a table/counter top or fully open and mounted on the wall: the choice is all yours. Imported.