60 wt./2-ply Polyester thread. Designed for Appliqué, Bobbin Thread, and Quilting. Lint-free never felt so good. Designed with award-winning quilter Libby Lehman, The Bottom Line makes a fantastic bobbin thread for any type of sewing. Its lightweight, blending colors are easily matched with any top thread. Available in 55 colors. Invisible appliqué and binding is a breeze with Bottom Line as it glides through layers of fabric. Bottom Line is fantastic for micro-stippling and English paper piecing.