Protect those delicate serving surface from scratches, moisture and other damage with these absorbent drink coasters. Made of ceramic material with a non-slip cork base, these 4″ x 4″ round coasters are suitable for use in a professional bar or restaurant or for entertaining at home. Easy to clean construction. Available in assorted colors. Add your organizational or company logo or message through our full color process to customize. Orders of 1,000 units are eligible for sea shipping rates.