Avanti Press Imprintable Blank Halloween Invitations/Notecards, Boo!, 10-Count (701274) Create your own one-of-kind greeting cards, party invitations and more with Avanti blank Halloween notecards Cards feature Avanti's iconic vivid photographic imagery; you supply the clever greeting or party details Blank cards can be imprinted on most laser printers using the "thick paper" or "thicker paper" setting and the manual feed feature Cards measure 4.75 x 6.5 inches; package contains 10 cards and 12 envelopes Printed in the USA on heavy card stock with a special glossy finish; card stock contains 35% recycled fiber