With ystudio copy letter paper set, every word you write will leave two precious handwriting. After the letter was sent, you could still preserve a copy as well as the emotions and memories. The set contains 13 letter paper, first 10 are paired with copy paper in the back. You can use the extra 3 letter paper freely, such as write a letter to yourself. How to use 1. Write a letter. 2. Tear off the original letter. 3. Enclose the original letter into the envelope and send it, keep the copy as momento. Remark: A set contains 10 copy letter sets, 3 normal letter paper, and 5 envelopes.