Keep furniture and countertops free of water marks and stains thanks to these custom coasters! A great investment for your next event or promotional giveaway , these 4" circle-shaped coasters are made of slate material and feature black EVA bottom pads on the back and contorted finished rims. Not only will they protect surfaces, but they will also keep your imprinted brand name, logo or marketing message on display for years to come! Grab a hold of yours today!