contained envelopes are perfect for the person who appreciates the art of letter writing and personal notes. Say thank you or hello with a personal and unique touch. Each set includes your choice of four blank note cards or thank you cards and four beautiful self-contained envelopes made from different high quality handmade papers. The note card fits perfectly inside the envelope which can be folded closed and sealed with a stamp. This set comes with four different shades of self contained envelopes which are light enough to write your letter on the inside instead of using the white note cards, if desired. I ship my items carefully and with love for safe travel, via USPS.