All my coasters are 100 x 100 mm and 8 mm tall. The embossed designs are only 2.5 mm at their deepest. The depth also allows water to collect in the coaster without making it stick to your cup. All coasters have a cork backing added to them so that they don’t slide on smooth surfaces. They are capable of holding wide coffee cups, and the 4 mm rim means they are also usable as small trays for crafts or knick-knacks. Do not microwave the coasters. If your coffee/drink is boiling hot, it may leave a ring on the surface of the coaster.
All coaster sets come with a display holder that has been individually sanded and painted with the name of that set.