Invisible Thread
Polyester thread is ideal for hand and machine stitching and most suitable for synthetic fabrics or fabrics with greater elasticity or movement. Use cotton thread for light to medium-weight fabrics that have little or no stretch to them. Cotton thread will not "give," and the stitches may break if used on a stretchy knit fabric.
Colourblend threads, made from high strength nylon monofilament and are suitable for any task that requires invisible repair work. They simply blend in with the fabric being worked on and are available in both clear and smoke.