STRONG ABSORBENT CERAMIC - Coaster upper layer is absorbent ceramic, which absorb ability better than normal silicone coaster to keep your table dry. ANTI WEAR CORK - The back of coaster is cork to prevent table from scratched and worn. And also provide additional gripping to the land, tightly stick to the desktop, easily handles bumps and drops. SUITABLE SIZE - Coaster diameter 4inch, suitable for all types of drinking glass like bourbon, highball, lowball, whisky glasses and mugs, tumblers, flasks, making them excellent home bar tools and accessories. EASY TO CLEAN - Spills can be easily wiped off with a damp rag and should not stain if removed in a timely manner. Use warm water and a mild dishwashing detergent or stone safe surface spray to clean. BEAUTIFUL DECORATION AND PRESENTS - Set of 4, the frosted glaze on the surface of the coaster keeps the pattern bright and never fades that is great to decorate your kitchen, living room, bedroom or office and so on. Perfect to sent to friends as a gift. Product Colour Name:Grey Marble Absorbent ceramic to keep your furniture dry Coasters upper layer is absorbent ceramic, which will keep your furniture dry. Non-slipped and protect your furniture The back of the coaster is cork, which is prevending your furniture form scratched. The support surface is really very flat and flat and made of fine cork. Nothing slips and the risk of spillage is zero. Environment friendly Environmental protection materials, of course, low carbon, non-toxic, waterproof and moisture-proof. The multiple use stone coasters is much more ecological than using disposable paper coasters. Specification: Material: Ceramic -Dimension: 4.05 inch/10.3cm Package Included: 4 x Ceramic Coasters Warm Tips: If coffee or dark drink splashed on the coaster, we recommend you to wash the coaster with water immediately.