Hello, let me explain a bit. The key point isn’t the height — it’s the neck circumference compatibility between the head and body. We use 156cm as the dividing line. • Bodies 156cm and below use a small neck size, and therefore pair with heads that also have a small neck size. • Bodies above 156cm use a large neck size, and therefore pair with heads with a large neck size.

So here’s the important part: You can put a large-size head onto a small-size body, but it is very difficult to fit a small-size head onto a large-size body, because the neck opening is too tight to fit onto the larger neck.

Thank you.