We print these using a sublimation process onto the white surface. Car coasters are a matte ceramic and will soak up spills and condensation. Sold as a set of 2. Knotched design makes it easier to remove from cupholder. All custom designs, requests are welcome. Previews for custom items will be provided for approval prior to a completed item being shipped. These are printed and pressed by hand and will be mailed out within three days of placing your order.