Body armor designed for men could be deadly when women use it because of a design flaw that can send bullets ricocheting off women’s chests and up into their throats.

At least 21 mass shooters have worn some form of body armor over the last 40 years, according to The Violence Project, which studies gun violence. The majority of those cases were in the last decade.

Body armor in general needs to meet a specific standard in the US from the National Institute of Justice. The goal of the new kind of Kevlar is that because it’s stronger, ...

Body armor is something Golden-based CoorsTek knows well. It has produced ceramic plates used to protect soldiers from bullets and shrapnel since the 1960s.