This is a drink coaster, which is made of diatomite material. The cup mat is eco-friendly and anti-microbial, antislip and quick dry, also water absorption. Great and practical household supplies for home daily use in kitchen or dining room. Features - Color: Green and Blue. - Material: Diatomite. - Size: Approx. 10 x 10 x 0.9cm. - Made of natural diatomite material, the drink coaster is water absorption. - Waterproof and moistureproof, deodorant and formaldehyde adsorption. - Antislip mat design, keep cups on the mat stable. - Quick dry and mould proof, hard to breed bacterium. - Eco-friendly and anti-microbial, great for home daily use. - Warm Tip: Dear buyer, due to lighting effect, monitor& 39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you