Tree-Free Greetings NC37891 Aunty Acid 4-Pack Artful Coaster Set, The Solution Vibrantly printed, thick reusable non-slip coasters 4 matching coasters per set in a gift able acrylic box Made of absorbent, high quality neoprene Easy to wipe clean with a little soap and water For all those who think alcohol is a problem according to chemistry, alcohol is a solution Thanks science