Just an FYI on these...I own 6. They are great not only for fondant/gumpaste but they are great for baking cookies. They prevent burning under the cookies. They come out nice and crisp.
Amazon also has a deal similar to silpat called Matfer Exopat Nonstick Baking/Roasting Sheet...exactly the same product. Currently they are $9.99 each and when you spend $25 you can get free shipping. I figured if you are nervous about spending the x-tra $$ this is an inexpensive way to try them.