Try selecting one: Wrap around gives better protection, at the expense if movement, weight, and a lack if airflow.
Side panels give better protection, at the expense on movement, weight, and a lack if airflow.
Trauma plates give better protection at the expense of...
You can armor someone like the LA Bank Robbery, but they can not fight.
The trade-offs are not easy to replicate because we are all made differently. A military can sculpt their warriors until they are all the same shape, but they lose other things.
Overweight cops especially have issues with the trade-offs in their body armor.