Fun card designs let you celebrate your event in style Heavyweight 127-lb stock is sturdy and elegant. 20 cards and envelopes to get the party started. Acid-free paper won't yellow or fade over time. 5 1/2in. x 7 3/4in. invitation size. Compatible with most all-in-one machines, copiers, inkjet printers, laser printers and typewriters. Black and white ink on matte paper for understated style. Great Papers! Flat Card Invitation, 5 1/2in. x 7 3/4in., 127 Lb, Zebra, Black/White, Pack Of 20 is one of many available through Office Depot. Made by Great Papers!.