Tree-Free Greetings ECO Coasters Box Set of 4 Drink Coasters, 3.5 x 3.5 Inch, Shark Collage  (EC52957) 4 cork-backed drink 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 Shark Collage-themed EcoCoaster set printed with vibrant colors and unique art Made in the USA!