NATURAL SANDSTONE- Each Coaster is made from natural sandstone. Each Coaster is printed with a traditional monogram letter surrounded by a classic wreath motif. Each coaster varies in color and pattern of the stone and adds a beautiful color and texture to your space. ABSORBENT STONE- Thirstystone Coasters continually absorb condensation from beverages and also protect your surfaces from heat when drinking hot coffee or tea. CORK BACKING- Each Coasters has an attached cork backing that protects your furniture or countertops from scratches and stains. Cork Backing also keeps the coaster in place while in use. ARTISTIC DESIGN- Beautiful artistic design allows the Coasters to remain displayed even when not in use. Decorative Coasters are an easy way to change the look of your kitchen, dining room, or outdoor eating area. MEASURES- Each Coaster measures 4”x 4" x .43”. Size allows for a larger glass or cup to be placed on them.