A strong, recycled polyester thread that is elastic and flexible, soft and supple, non fade and colourfast. For ornamental stitches, backstitch seams, decorative seams and manually stitched button holes. Recommended needle size: Universal needle NM 100 to 120. 100% recycled polyester. This particular 3-dimensional sewing thread is made of 100% recycled Polyester. It is a three-ply sewing thread with a consistent round thread cross-section, ideal for 3-dimensional ornamental stitches and decorative seams, closing and backstitch seams on medium to heavy-weight fabrics, woven fabrics and many other materials.