I wanted sew-on hem tape, but couldn’t find any, except the lace kind. This was my only choice, and I don’t like it very much.
I was shortening some pants for someone last week, and I needed plain old hem tape, in gray. Unless I was willing to buy the lace kind, my only choice was the iron on. I used it, but I really don’t like it for sew-on use. Then I tested the iron-on choice, and didn’t like it much better.
Now, I will admit that for ease of use, or if you don’t sew, then iron on is a valid option. But when I used a leftover piece and created a hem on a scrap of fabric, the resulting line of attachment is very stiff. This would not be good at all on soft fabrics. I did run this scrap through a laundry cycle and it held tightly. So that is good. You have to be careful not to let the hot adhesive get on your iron or ironing board or you will have a mess.
For use as a sew-on tape, the main problem is that the adhesive line is still there, and it is both stiff and heavy. For a fabric with a nice hand this would not be good.
If I had had more time, I should have gone to other stores or ordered the sew-on tape.
That said, Wrights offers an amazing guarantee. They say that if it is found faulty in any way, “making the garment unuseable, we will reimburse you for the reasonable cost of your labor and all your materials used in making the garment.”