Why do cops and security guards wear bulletproof vests, but leave their heads exposed? This is a common question, made famous by the classic American comedy Dumb & Dumber
A commonly-cited answer is “the head is a smaller target”, but I’m not sure this is the best argument if you look at the data. A 2015 study from the Journal of Trauma and Acute Care Surgery found that fatalities of mass shooter attacks were equally likely (29%) to be struck in their heads as they were in the upper torso. In fact, when you aggregate the areas where bulletproof vests cover you, the likelihood of getting fatally shot in a protected area (43%) outside of combat is significantly less than getting shot in an unprotected area (58%) (some overlap due to multiple injury cases).
The best argument for wearing bulletproof vests is not necessarily that they protect you where you’re most likely to be shot and killed. It’s that they give you a significantly better chance of surviving a gunshot wound than not wearing a bulletproof vest. That's why bulletproof vests - even discrete ones like the CoverMe-Seat - can actually save your life, even if you don't walk around carrying a bulletproof helmet.