Mettler Poly Sheen has a much has a larger surface area to reflect the light. This trilobal polyester also has better elastic qualities and 50% higher tensile strength than rayon. Well suited for use with highly stressed textiles such as sports and leisurewear, children's clothes, leather, work clothing, jeans, terry cloth, and hospital laundry. Size 40 200 meter / 220 yard. Fawn