Tree-Free Greetings Set of 4 Cork-Backed Coasters, 3.75 x 3.75 Inches, Aunty Acid Totally Unique (EC96405) 4 cork-backed coasters in a giftable acrylic box 100 percent post consumer recycled inner chipboard and a waterproof top film Easy to wipe clean with a little soap and water 3.75 x 3.75 inches Totally Unique themed Aunty Acid art