Set Measures 6.5" long x 2.5" wide x 1" deep; includes 4 spools (219 yards, 200m each) of Poly Sheen Sewing Thread and 4 Spools of (109 yards, 100m each) of Metallic Poly Sheen Sewing Thread in Bright Christmas Colors. Mettler Poly Sheen colors included in set: 1902, 0870, 5324, 1346; Metallic: 1723, 2701, 2108 and 5833. Poly Sheen has better elastic qualities and 50% higher tensile strength than rayon and can be used in every situation and is particularly well suited for use with highly stressed textiles such as sports and leisurewear, children s clothes, leather, work clothing, jeans, terry cloth, catering and hospital laundry. Thanks to its trilobal qualities Poly Sheen has a significantly larger surface to reflect the light, making it appear even more brilliant. Excellent embroidery and decorative sewing, with no risk of thread breakage and can also be used with the latest high performance machines.