These stone coasters actually absorb condensation from your drink! They are digitally printed here in the USA with my hand painted artwork. The back of each coaster has cork, safe for any surface. Unfortunately, Faire has not yet made it possible for some items to NOT be covered with Insider shipping that I, the vender cover (like my coasters) so I needed to create my own listing with that cost. * Art is heat & water resistant for top absorption! * Set of 12 total absorbent stone coasters * 12 Coasters of one design * 4.25" Square with cork backing SKU: XSQC_HCSC33a