Car coasters are customizable and made with epoxy. They help protect your cup holders from getting nasty as well as adding a bit of flare to your car. Coasters are approximately *2.8* inches in diameter. The backs of the coasters will be black by defualt. If you would like a different color, please indicate so in the custom box. If you would like me to add a name or saying please also indicate.  Please keep an eye on your email because I may message you with questions regarding your order.