Boston-based FilzFelt makes all their products from 100% wool felt imported from Europe. It's expensive, but this is the good stuff — 5mm thick, and available in 31 colors. They just started making these perforated panels, which would make great room dividers. (See this post for a similar DIY version.) They come in two sizes — S (34" x 96") and L (68" x 96"). Price includes a set of 2 panels.