Our coasters are sold individually, so you can mix and match to create a custom set that suits your style. Want to keep them organized? Add a Coaster Holder to complete your collection. Simply click the link below to get your own! https://www.etsy.com/listing/1866680982/4-pack-wooden-coaster-holder-crafted?ref=listings_manager_table Show your Blue Devil pride with a beautiful Duke University coaster – the perfect gift for any fan, student, or graduate to add a refined touch to their home! NCAA – officially licensed. Coasters are sold individually, so you can mix and match to make a custom set! These elegant pieces are cut from your choice of cherry or maple wood, with each board hand selected for the perfect shape, texture, and wood grain to ensure each piece is both eye-catching and unique. With a cork backing, moisture-resistant finish, and a grooved edge specifically designed to contain excess liquid, these beautiful and highly functional coasters will protect your furniture for years to come! Go Blue Devils! Dimensions: Our circular wood coasters are 4" in diameter, which we have found is the perfect size to place any size water cup, coffee or tea mug, water bottle, can, or glass bottle! FAQs: Are LazerEdge wood coasters water and heat resistant? Yes, our wood coasters are water and heat resistant! We spray 6 coats of professional furniture grade lacquer on each piece to ensure they are protected. We use the same lacquer that furniture companies use on heavy duty bathroom appliances. Rest assured, your LazerEdge coasters are made to last! Do LazerEdge wood coasters absorb water? Our wood coasters do not absorb water because each has 6 coats of professionally applied furniture grade lacquer. When your drink sweats, the water will collect on the coaster and then evaporate. The engraved ring around the outside of the coaster is designed to keep the pool of water on the coaster and off your table. Is there any maintenance with these coasters? Think of your LazerEdge coaster as a beautiful piece of furniture - but much less expensive than the table or surface you are trying to protect! While it is not necessary to do any maintenance, you can use any furniture polish on your LazerEdge coaster to make it shine like new! My coaster has accumulated some white residue on it. What is it and how do I get it off? Water has a small amount of minerals in it and when water evaporates in the same spot over and over again, those minerals are left behind and start to collect and appear as white residue.