Coats & Clark Dual Duty XP Fine Thread is a strong yet fine thread for pucker-free seams in lightweight fabrics. The new unique manufacturing process applied to the polyester-wrapped, core-spun construction of Dual Duty XP creates a thread that provides enhanced seam appearance and makes sewing trouble free. The thread now comes on trap spools that are color coded-Lavender, so they are easy to find and the thread is secure.100% polyester covered polyester. 225yd Nugrey