Personalized Custom Cedar Coasters - Set of 4 Coasters are 4" x 4" x 3/4" and are made from Cedar. Customize by picking a picture or Letter to your coasters. You can use different letters for each or the same letter for all 4. If you choose different pictures on each, it might cost more depending on the complexity of them. Best pictures to use are line drawings types. Coasters are carved and painted then sprayed with 3 coats of lacquer for protection. If you have any questions, feel free to ask.