We offer a wide selection of coasters, with popular stock shapes priced and ready to go. Custom shapes and sizes are also available form charges and updated pricing may apply. Made from vinyl with a patented dot-pattern backing, these coasters help smooth out air bubbles and can be repositioned as needed. For best results, apply to clean, flat surfaces. Variable-data printing (VDP) (Also known as variable-information printing (VIP) or VI) is a form of digital printing, including on-demand printing, in which elements such as text, graphics and images may be changed from one printed piece to the next, without stopping or slowing down the printing process and using information from a database or external file. For example, a set of labels, each with the same basic layout, can be printed with a different name on each label. Variable data printing is mainly used for direct marketing, customer relationship management, advertising, invoicing and applying addressing on self-mailers, brochures or postcard campaigns.