I used this for national exam preparation from April to October 2024. Because it was for exam preparation, I used it carefully to avoid getting any dirt on it, and I treated it with a treatment once a month. I think it's still usable, so please purchase it if you need it. Front 15cm, Top 15.5cm, GP 15cm, Back 15cm, Nape 15cm, Sideburns 15cm