The car cup holder coasters are anti-slip, waterproof and dust-proof, protecting the original car cup holder slot will not be damaged from water stains, dirt, dust and scratches. The car cup holder coasters diameter is 2.75 inch and the thickness is 0.24 inch. Thicker models, thicker than other products of the same type on the market. Wide compatibility, fits 99% cars in the market and also can be used at home and office. Made of premium quality environmentally friendly thick silicone material, which is not only durable and withstand high temperature without peculiar smell, but also can avoid the rattling effective. The car cup holder coasters is easy to cleaning, it can be clean by dry/wet paper or towel, also can wash it in the water, and then dry in the wind or sunlight. Personalized design, stylish and versatile, can used for drink coaster and anywhere also. Matches almost all auto interior accessories, upgrade the grade and beauty of your auto.