GÜTERMANN Cotton 30 is a 30 wt cotton sewing thread made for quilting, decorative stitches, and top stitch seams on medium to heavy fabrics. Each spool provides 300 m (328 yd) of 100% mercerized cotton in Green Forest, giving a smooth, natural look for hand or machine sewing. The thicker thread weight adds a subtle three-dimensional definition, helping stitched details stand out on finished projects.