These olive wood drink coasters have a natural rugged look cut straight from an excess tree branch. No tree was damaged or destroyed in the harvesting of the wood. Olive wood is a very strong hardwood that will never warp or crack. Olive wood also has antibacterial properties, and is resistant to stains and odors! As olive wood ages, it will become darker and richer in color, thus making it even more beautiful. Each coaster is approximately between 3.5 and 4 inches in diameter. Made in Spain.