IT IS CALLLED TEXTILE MEDIUM. I made these quilts in 2008 or 2009... have pictures of them on this board under another name. I got it at Michael's.... Very wrong about how i put it on ...sorry ...I used a PAINTBRUSH TO PAINT IT ON. Already sewed top together. Followed their directions on how to do it, then used hair dryer to dry. I only painted the crayon part not the whole block.. The solution leaves a soft plastic like protective cover over the colored pictures. Still bright and Nice no cracking at all.