Size: 2.5 inches Diameter each. Set of 2 Absorbent Beverage Coasters for your Car. Features 2 fingertip grips for easy removal from cup holder. Fits Most vehicle drink holders. Thirstystone Carsters are the latest accessory for your car, truck, boat, or even stroller. Carsters not only personalize your vehicle, but protect it from messy drips and condensation. Printed and Packaged in the USA! Carster Coasters by Thristystone.