These are Ryo Matsui's brand ha za ma's heel pumps, "scarlet bullet.ver," which are a key item. They have a strap. The trigger can actually be pulled. I fell in love with the design and bought them, but I tried them on at home and realized I'm not used to heels, so I don't think I can wear them properly. Therefore, I'm putting them up for sale. The size is listed as 22.5cm, but they feel a bit larger than the size indicates. They've only been tried on indoors, but they have been handled by someone, so I would appreciate it if you could understand. Thank you.