Answer: the glass ceiling
Step-by-step explanation:
The Glass Ceiling is a metaphor that is meant to describe the hardships that women face in trying to get into managerial positions due to bias against them born from a belief that they will be unable to handle the pressure.
The term describes how this bias creates a barrier that is not tangible so is invisible but is a barrier nonetheless much like a glass ceiling which one can see through but cannot go through.