Prism, I pulled it out and it's made by Sulky and called "Sticky Fabri-Solvy". When I tried turning the glued seam allowances over with my fingers, I found I was turning over too much. I was actually turning over a bit of the Sticky Fabri-Solvy along with the seam allowance. It's soft, not stiff, so that can happen. So for me, it worked far better to use the two cuticle sticks for turning. The ends are cut on a bevel, so I could put the thin edge of the stick right at the end of the Sticky Fabri-Solvy to show me exactly where to turn over. I would then use the other cuticle stick to turn the glued seam allowance over the tip of the first stick, making a crease. Then I could slide the first stick out from underneath and finish tapping down the seam allowance, following the crease I made.