YLI Wonder Invisible Clear Thread

Invisible thread is used on the top (through the needle) normally with a thread such as a 50 weight or 60 weight cotton thread in the bobbin. We do not recommend using invisible thread in the bobbin. Tex 8 Wt 106 .004 Nylon Monofilament 1500yd spool Wonder Invisible is a very popular thin, clear monofilament. Use it for stitch-in-the-ditch, hand or machine applique, quilting when you don't want the thread to show, apparel hemming. Use the Smoke shade for darker fabrics. Contrary to widespread misinformation, Wonder nylon monofilament will not melt with a home iron - but we also offer a Poly version for those who refuse to believe.