This A4-size music lesson file is convenient with pockets. - Model Name: MUSIC LESSON FILE - Country of Manufacture: Japan - Size: A4 - Features: With pockets Thank you for viewing. It opens horizontally, so it's easy to use and things won't fall out. You can also put A3 copies directly into the pockets. I will be away from home from July 11th to July 18th and will be unable to ship items during that time. Thank you for your understanding.