Pattern Pop offers personalized coasters in a variety of materials and shapes. A personalized coaster is a great gift, but also a great item to help decorate your home. The personalized coasters are in a set of 4. The coasters are offered in both a hardboard material with a cork backing, or a rubber material. The rubber material is similar to a mouse pad material. Regardless of round or square these personalized drink coasters will be a hit with everyone.