This double-stick fusible web from The Warm Company is my personal favorite. It temporarily adheres to fabric without an iron (so you can re-position if needed) and fuses for a permanent bond. Release paper on both front and back make it easy to store and easy to work with. Best of all, you can now print on the release paper! Yay!
You get five sheets in this package, each measuring 9" x 12".
(Don't use dryer sheets when laundering fusibles.)