Free Customized with your pet info such as pet name and phone number. Please include the info you want to show on the tag and the color you want for the background in the GIFT MESSAGE section when checking out. If no color option is requested, the color shown in the first listing image will be used The tag is single sided and the back side CANNOT be engraved. I can only put address, name and phone number on the front side. Sealed and encased inside the industrial grade resin to protect the graphic and pet info from outside elements.