What size is the full-length mirror?

I think the following sizes are suitable for full-length mirrors.

1, the best size of the full-length mirror is 1 m 5 to 1 m 7, and the width is 50 cm to 60 cm.

2. The optimal size of the full-length mirror is 1.5m to 1.7m, and the width is 50cm to 60cm. The height of the mirror is only half the actual height of Byakki Smoker.

3. However, due to the size of space, the distance between people and the mirror and other factors, the size of the mirror changes with the change of design technology, forming a more practical size.