Here's what the tape does:
Heat Press Batting Together
HEAT Press Batting Together is 1 1-2 inch cloth tape that will fuse two edges of batting together. It is soft, its thin, it stretches, its needle easy for hand or machine quilting.
Quilters - We do not have to sew the batting edges together anymore... we can fuse it.
Item no: heatpress_sgl
Item no: heatpress_sgl
Wholesale Price: $6.50 Each
Here's just one place you can get it: jhittlesewing.com
I've used it and like it. Almost everywhere I've seen it, it's the same price.