Mettler Polysheen is a premium machine embroidery thread that is wonderful in every way It has excellent sewability, is more durable than rayon, retains its luster and high sheen when sewn in and with repeated washings, and works well in the bobbin too 100 percent trilobal polyester 5 spools per box 40 wt 220 yard spools4 X 32 X 85Box of 5 Machine Embroidery Thread, Joanns Fabric And Crafts, Sewing Supplies, Embroidery Thread, 100 Percent, Craft Stores, Penny, Machine Embroidery, Thread