GÜTERMANN Cotton 12 is a mercerised cotton thread designed for quilting, decorative stitches, and bold closing or top-stitch seams on woven and other medium-to-heavy fabrics. This 200 m (218 yd) spool in Gold Sun is suitable for hand sewing or machine stitching when you want defined stitch lines on patchwork and visible details. Mercerised cotton gives a smooth finish, and a quick test on scraps helps confirm tension and stitch length before you sew your final piece.