I love 3L's Scrapbook Adhesives runner so much that I just had to try their vellum tape. The first time I used this and this showed through my vellum, I thought that I just happened to be using a super-transparent vellum. But then it kept showing through with all sorts of vellums. Then I started hearing other people talk about how this adhesive showed under vellum with them. So it's official - this stuff is NOT transparent under vellum, it totally shows through. Plus this does not provide the smoothest rolling application either, it's a bit of a struggle to lay this stuff down. I'm using mine up as regular adhesive now, NOT under vellum. Don't buy this!
I too am disappointed with this runner...like another reviewer says you have to force the tape out and it is showing up white through my vellum. I could've easily have gotten this effect with glue.
Don't understand why it was not clear! wouldn't buy it again with hopes to find something better!