Steam-A-Seam 2 in 1/4" (6mm). Wonderful for so many uses. It's not the cheapest thing around but omg it saves you a lot of trouble in basting. And so neat.

I also carry the Steam-A-Seam 2 Lite if that's what you're after.

Here's info from the supplier:

A unique fusible web that has a pressure sensitive coating on both sides.

- Holds temporarily to both the applique and the background materials.

- Your entire applique stays in place without shifting or moving.

- Repositionable until pressed.

- Ideal for quilts, crafts and wearables.

- Sticks to a wide variety of surfaces from paper to wood to glass!

¼” x 40 Yards (0.63cm x 36m)

For narrow seams and delicate trim.