4 car coasters with 4 different patterns, measuring 6.5 cm/ 2.56 inches in diameter and 0.7 cm/ 0.27 inches thick. The 2.56” diameter is designed to fit cup holders in most cars, vans, boats, SUVs, and trucks. Our car coasters have a porous ceramic surface to absorb condensation droplets, drips, and slight overflows. Most coasters for cars come without a non-scratch cork pad! The cork base protects your car from scratches and produces enough gripping power to prevent the coaster from slipping.