These heavy weight 140 lb. Cards offer the attributes of a watercolor paper but with a vellum drawing finish. They are ideal for watercolor, gouache, acrylic, graphite, pen and ink, colored pencil, marker and collage. Acid free. These larger size cards can be used to design a greeting for any occasion from Birthdays, holidays and invitations to general correspondence. Full size matching envelopes are 5.25" x 7.25". this item is manufactured in United States.