Premium Silicone Material: These premium silicone coasters are made of smooth, non-slip, environmentally friendly, high-temperature resistant, odorless, waterproof, and heat-insulating silicone, effectively protecting your desk and other surfaces. They also come with a durable metal stand for easy storage. You can place them directly on the dining table, under your drink or coffee cup. Practical Design: Silicone coasters reduce heat conduction and protect your desk. The raised edge of the coaster is slightly higher than the center to prevent spilled water droplets from falling onto the desk and getting stuck to the bottom of the cup. The non-slip silicone bottom holds the cup firmly in place. You don't have to worry about drinks or coffee spilling on documents or scratching your precious desk. Advantages: Silicone coasters are more non-slip and heat-insulating than metal coasters; they do not absorb water like felt coasters and are easy to clean. They are softer and more durable than wooden coasters. Reusable, soft, and heat-resistant waterproof coating. After use, simply rinse the coaster with water and let it air dry to restore its new appearance. Versatile Use: This black coaster is suitable for various occasions, such as the office, living room, bedroom, dining room, cafe, classroom, etc. High-quality silicone coaster, 10 cm in diameter and 0.3 cm thick. Suitable for most cups, such as glasses, teacups, coffee cups, etc.