HYGLOSS-Make & Mail Postcards. Special delivery! Made with heavy cardstock, these brightly colored postcards won't get lost in the mail. Each card is blank on the front and printed with address lines and stamp positioning on the back. Children and adults alike can draw, paint, and color personal messages and designs and then send them off to friends and family. They are perfect for pen pals, holiday card giving, classroom activities, party invitations, teacher's notes, and sending special thoughts to someone you care about. Each postcard measures 4x5-1/2 inches and there are twenty- five included in each package. Acid and lignin free. Made in USA.