This small card is ideally suited for formal announcements, gift enclosures, invitations, change of address and thank you notes. Announcement Size matching envelopes are 3.625" x 5.125". These blank cards are made of 400 Series Mixed Media heavy-weight 140lb. (300/gsm) paper. The acid-free paper features the attributes of a watercolor paper but with a vellum drawing finish, making the cards ideal for watercolor, gouache, acrylic, graphite, pen & ink, colored pencil, marker and collage. Each pack includes ten cards and envelopes. Made in the USA.