This is a used item. There are no functional issues. The height can be adjusted in 15 cm increments. (Photo 6) *As this is a used item, please refrain from purchasing if you are sensitive about condition. *We may use recycled materials for packaging. *We plan to ship anonymously via Yamato Transport. *Please note that for the prevention of fraud, we cannot accept returns or exchanges after shipping. Thank you for your understanding before purchasing.