I tie mine with embroidery floss. Just make sure you tie it with a square knot. You can also "bury" the ends in the quilt if you wanted, that way, the ends don't show. I've given TONS of tied baby quilts away and they are still tied. One thing I do tell people tho is...every once in a while, just take a check at the ties to make sure they are secure. Over time, they can come undone, but I've never heard of a problem with mine.