This set of long table benches does not look like anything special from the outside, but it is a long table bench that changes color. Its surface is coated with a layer of color-changing material, which is bright and pure black at room temperature. But if the temperature of the table top rises, such as sitting or lying on it, the position in contact with the body will change the transparency according to the temperature difference. The higher the temperature, the higher the transparency, and you can see the natural wood grain under the coating. If your palm is pressed on the table, two transparent palm prints will also be left. It will return to its original black color when it returns to normal temperature. The table and chairs sell for ?1,850.