Car Coasters Size: 2.56 x 2.56 x 0.26 Inch, the size intended to fit cup holders in most cars, vans, boats, SUVs, and trucks.Material: Ceramic + wood, can easily absorb the water outside the cupDesign: there is one convenient notch on the side of the coaster for easy removal;Keep the cup holder dry and clean.Gifts: This unique design will make you different and fashion, as gift to share with your family, friends for holidays and birthdays.Clean: Very easy to clean, just use water or add a little detergent to clean