Rapid absorption: Unlike usual coasters, our Drycup stone coasters absorb and evaporate moisture swiftly. Made from diatomaceous earth: Each 2-pack set is crafted from highly porous organic diatomaceous earth which renders them with extremely quick absorption and drying properties. Durable: Our absorbent stone coasters are designed to withstand the tests of time and constant usage. Non-Scratch: The stone coasters are constructed only from organic materials that are even softer than wood or glass. Thus, the Drycup protects your coffee and dining tables from potential scratches and scuffs. Gift idea: What's better than a gift that's both appealing and extremely practical? Our absorbent stone coasters serve as fantastic gift ideas for occasions such as housewarmings, christmas, and birthdays to name a few! Easy storage: With a slim profile measuring only 0.4" in thickness and a 4" diameter, they are easy to store and contribute to home organization.