Seedling's Coaster Sets contain 6 heat + water resistant, cork backed coasters. Each coaster is designed with foil details. The Plantable Seed Paper Sleeve is biodegradable and embedded with seeds. When the paper is planted in a pot of soil, the seeds grow and the paper composts away. All that is left behind are flowers. Size: 3.75" X 3.75". Made in the U.S.A.