Each coaster is Laser Engraved with your name and est. date as shown in the pictures. Each coaster measures 4"x 4" square. Made of Acacia Wood and MarbleHow To Order:Please enter your information in the personalization box.Enter it exactly how you want it engraved.* Our coasters are made from marble and acacia wood. The set includes 4 engraved coasters. Please allow for slight variations in the color and grain of the wood. Some coasters may engrave slightly lighter or darker than the photo shows. Each coaster is different and unique! This is the beauty of natural materials.