I found some at Joann's, but probly any fabric store would have some. The stuff that I got is what I think of as football jesey material. Know what I mean? Kinda shiny, tiny bit stretchy, with lots of little holes. It was on a sale rack-woohoo! I know some sites sell the solarveil stuff too, but can't remember the web addy off the top of my head. I'm sure someone here will know. Have fun! Slings are so fun and easy(and addictive) to make!