Strathmore Creative Greeting Cards are perfect for creating formal announcements, invitations, change of address and thank you notes. The paper is 80 lb (216 gsm) cover with an excellent texture; perfect for colored pencils, rubber stamps, collage and more. Cards measure 5 x 6.87 inches, with matching envelopes. These cards meet the domestic size requirements for 1st Class US Mail. Pack of 20 cards.