About this item Made of Ceramic: The ceramic stone coasters have a smooth surface and a cork base, which is not easy to break during use, is heat-proof, and has stronger water absorption than silicone coasters. Square Size: set of 4/6/8 square coasters, the size is 4 inches. It is suitable to be placed under tea cups, accompanying cups, coffee cups, ashtrays, glasses, goblets and juice milk. Avoid Scratching: Non-slip coasters allows you to no longer worry about causing damage to the desktop when moving the coasters, and keep the desktop dry during daily meals and friends gatherings. Pattern Description: High-quality ink uses UV printing technology to present realistic patterns on the coasters. For high-grade people, modern, retro, farmhouses, weddings, stylish coasters are the best decorative accessories. Cleaning Steps: When cleaning the coaster, use a soft brush to gently clean the surface in warm water, and then use a dry towel to wipe off the excess water. Do not use bleach.