Hygloss Products Make and Mail Postcards: These colorful postcards are a great addition to your classroom and arts and crafts time. Say goodbye to lost letters! The postcards measure 4 x 5-1/2 inches each and come in a variety pack of 25 bold, assorted colors such as Blue, Green, Yellow, Orange and Pink.Colors may vary in each pack. Premium DesignThey are made from durable, medium-weight card stock paper that holds up great in the mail. Even if you are mailing them across the world! The paper contains no acid or lignin which helps prevent them from fading. Unique Arts and Crafts Activity Children and adults have a blast with these postcards. Use them to keep in touch with pen pals, holiday card giving, classroom activities, party invitations, teacher's notes, and so much more.Each card is blank on the front, so you can decorate and embellish with markers, stickers, paint, etc. The back is printed with address lines and stamp positioning when you are ready to send your message. The Hygloss Products Make and Mail Postcards are proudly made in the USA!