Protect the integrity of those delicate serving surfaces when you hand out the beverages on these handsome drink coasters. Made of absorbent ceramic material, these 4″ square coasters have a sturdy cork backing that prevents, slipping, scratching and damage from liquid spills. Suitable for use in a professional bar or restaurant setting or for entertaining at home. Available in white. Add your organizational or company logo or message to customize. Orders or 1,000 units or more are eligible for sea shipping.