Very nice and vibrant colors. But it's hard to call it fabric. If you want to call it fabric, it is made of shiny synthetic fabric, which is also more practical for coasters. It has not been tested with anything hot, but due to the fact that it is made of synthetic material, it doesn't seem like a good idea. Pay attention to the quantity. You get 24 pieces for the price. Dimensions 10cm X 10cm (maybe a few millimeters less).