Is this not the cutest thank you card ever?? Sandy hand made this herself. I really want to know what she uses as the backing so to speak. it's a thick almost cardboard, but not cardstock. Anyways, I love it! I love the air mail sticker on the envelope too, lol! I think I'm going to write Sandy back and hopefully have an international pen pal and new friend. So thank you Sandy! It made my day!!