These thick (3/8") absorbent, 4-inch, 100% Natural Sandstone beverage coasters with cork backing absorbs condensation and protects table-tops. Natural Sandstone "patina" features earth tones that complement your message. Cut from the earth, the natural patterns and variations make each coaster unique. We suggest that 50% of the surface is left unimprinted for maximum absorption capabilities. Imprint is permanently embedded into surface. 4 count of sandstone coasters in amber wire holder. Made in USA.