Made from natural absorbent limestone, these Fitness Instructor Coasters are super absorbent! When using the I'm Sorry Did I Roll My Eyes Coaster, condensation disappears before your eyes. Drink stains aren't funny, so you can continue to have a good laugh with friends and family. Our coasters are permanently printed with high-resolution graphics and humorous sayings. These natural premium absorbent stone drink coasters are proudly made in USA!