We used this with two people, one 153cm and the other 170cm, and both could use it. Unless you are very large, I think it can be used, but if you are concerned, please check the detailed dimensions from the products sold by Dr. Maxam. The first one only fixes the shoulders, so it is recommended for going out. S/M size. The second one provides firm support, but it is tiring to wear for a long time, so I think it is better to use it at home for posture correction. M size. Posture correction supporter Posture correction belt Kyphosis correction supporter Kyphosis correction belt It seems to cost over 5000 yen at the regular price.