Nylon Invisible thread invisible 50% off! Now £0.78 Currently out of stock Invisible nylon thread on 200m rolls, suitable for machine stitching and in two colours. This 100% nylon monofil thread blends with any fabric and any colour. Use it where you don't want stitches to be seen.Can also be used in your sewing machine to wonderful effect. You can iron it without it melting too. Available in two colours - clear and smoke (black).