Made of good solid pieces of cork, great absorbency, and coasters are thick and will not bend or stick to the bottom of your cups. Protecting your tabletop from drink dripping and temperature changes. Great for for kitchens, bars, offices, offee shops and more various venues. They also can be used as bases for vases, candle holders and other small items. 3 15/16" D x 1/8" Thickness