What type of weapons does Level I body armor protect against?

Level I body armor is designed to provide protection against lower-velocity projectiles typically encountered in self-defense scenarios, including rounds that are generally considered less lethal. Specifically, it is effective against smaller caliber handguns such as .22, .25, and .32 caliber weapons.

These calibers are typically used in compact and smaller handguns, which are less powerful than larger caliber firearms. Level I armor is not meant to withstand more powerful rounds, such as .38 caliber or those classified as Magnum, which can generate higher velocities and have greater stopping power. Therefore, the focus of Level I armor is on protection from the lighter and lower-velocity rounds, making it suitable for situations where such threats are present.