Thank you for viewing. Everything in the photos is included. Although I have never used it, I checked the button lock on one side. ★ There are two small dents within the blue frame from the beginning. ※ See photo ★ As stated in the instruction manual, the button lock is difficult to remove until you get the hang of it, as I also saw at the hospital. ☆ From a recycling perspective, used envelopes and cushioning materials may be used.