When sewing, having the right bobbin thread is one of the critical factors in a successful project, and Coats & Clarks Bobbin Thread is here to help. This 70-weight thread comes on a mini king spool that holds 1800 yards of 100% continuous filament polyester, which is soft, lint-free, and lightweight. This durable thread won't add bulk to your embroidery designs or stitches. Coats & Clark Polyester Bobbin Thread is very fine, which allows you to wind more thread on your bobbin and go longer between bobbin changes.