craftgrrl | A little help needed... Just a quick question.

Okay, I'm familiar with the basics of wing making using organza and mesh and paper... And I'm also pretty familiar with the products on http://firefly-path.com, I've been following their site for *years*. I'm making myself a pair of wings for my sea faerie costume for the renaissance festival, and I had a question about a few pairs of wings they've made. I've read some places that the material they used to make the wings is sticky on one side and you just fold it over the wire frame(?) If this is the case, where would I buy such a material? I work at Jo-Ann's and I've never seen it there. And if it's not the case, what type of material is it, and where would I buy it? I think it's some sort of pearlized cellophane or something...?
This is the type of wing material I'm talking about:

Please note the picture and products shown in this image are copyright to Lillyxandra and Haruka of http://firefly-path.com , if you are interested in such products you should visit their site, they make wonderful, beautiful creations. Hope one of you can help me!