What is standing feet and shrugged shoulder?

Standing feet: The standing feet means the doll can stand normally, so it can strike some poses you know. we insert 3 bolts under the sole to enable this feature (Bolts can be covered if you like), so most of buyers will choose this.
Shrugged shoulders: Built-in a different skeleton. Obviously, it's more flexible than normal model. the motion of arms is still mechanical, can't wave like human.