Protect tables and countertops with this nonstop advertising addition! The Round Slate Coaster measures 3 1/2" in diameter and features feet on the bottom. Add images to the 2 1/2" x 2 1/2" imprint area before handing these out in stylish onyx packages. Use each coaster when they order a cocktail at restaurants and pubs or provide these as a gift at trade shows, game day promotions or beer tastings. Due to the natural material being used, some variation may occur from piece to piece, and square versions can also be ordered. What a great way to make a lasting impression!