Brown & Blue Stripes Flat Card 20 cards and envelopes 152683 Flat invitation cards 5.5" x 7.75", perfect for printing invitation and announcements. They also work great for scrapbooking or photo frames. Inkjet, Laser and copier compatible. Cards are made from 65lb cover stock and are mailable without a envelope. Requires First class postage. Design is printed on one side the other side is blank. Acid and lignin free 20 cards and 20 white envelopes