Pottery Diatomaceous Earth Coaster COLOR: Indigo This coaster quickly absorbs water droplets from glasses with the excellent absorbency of diatomaceous earth. The coaster won't stick to the glass, and it dries naturally over time, so it requires no maintenance. It has a simple design using traditional Japanese colors. Specifications Product Code: 4562381451452 Manufacturer: N. Elephant Materials: Diatomaceous earth, clay, cork Product Size: Diameter 9.7 x Height 0.6 cm Retail Price: 1100 yen I bought this and have been storing it at home. I hope someone will use it.