Aside from protecting tables and countertops from stains and water marks, these customizable coasters make great conversation starters! Made of slate material, these coasters measure 4" x 3.75", feature a heart shape and black EVA bottom pads on the back and contorted finished rims. They are great for promotional events, bar promotions, Valentine's Day events and much more - just make sure to add a brand name, logo or marketing message to each one using our imprint methods!