Aurifil’s 100% Cotton 40wt/2ply thread is wound on a green spool. Because of its slightly thicker weight, it is perfect for use with sewing bags, toys or dolls, garments, or when a more defined topstitching or quilting pattern is desired. It is also terrific for Single, Double or Triple Strand Cross Stitch, Hand Piecing, Bobbin and Machine Lace, Machine Applique, Machine Embroidery, Edge-to-Edge, Pantographs, and Custom Longarm Quilting. Needle recommendations: 80/12 Microtex/Sharp, Universal, or Denim Needle (40wt or 50wt in the bobbin); 90/14 or 75/11 Quilting Needle (40wt or 50wt in the bobbin); 3.5 or 4.0 Longarm Quilting Needle (50wt in the bobbin).