Diatomaceous earth diatom mud absorbent coaster rectangular. Unique diatomaceous earth material with excellent water absorption performance, effectively absorbs moisture from the bottom of the cup, keeping the desktop dry and tidy. Rectangular design, compatible with various cup types, while adding home aesthetics. High temperature resistance, environmentally friendly and non-toxic, safer to use. Whether at home, in the office, or in a coffee shop, diatomaceous earth coasters are your ideal choice, allowing you to enjoy a fresh and comfortable life.