There are some combat situations where nothing but the highest level IV body armor will do. This level of protection is designed to protect the wearer against high velocity rifles and other threats, such as those from a blunt instrument. Body armor with this degree of protection is often a level IIIa vest fitted with the special plates designed to supplement the existing level of protection and raise it to a level IV.

It is important to realize that even with level IV body armor, there is no way of rendering yourself completely resistant to any kind of ballistic or stabbing attack. Wearing any level of protection will increase your odds, but that is all. Even a level IV will fail if an assailant gets a "lucky hit." It is important to point this out because some private citizens tend to regard body armor as the complete answer, when there is no complete answer to the problem of violence.

New Level IV Body Armor

Dupont, the makers of the famous and highly successful Kevlar fabric used in so many different types of body armor, have made another breakthrough. In 2004 they unveiled their new fabric, still in testing. Called liquid armor, the new fabric is saturated with a thick liquid that allows for a very lightweight and flexible body armor for any area of the body. It works by becoming rigid on impact with any projectile. Until that point it is completely flexible and so allows the wearer a great degree of mobility.

The liquid body armor is a response to DSM and Honeywell Spectra plates, but is not available at the moment. Armies all over the world are shifting from their bulkier ceramic plates to the new DYNEEMA/Ceramic combination. These new Level III and IV inserts have carefully been tested the last 8 years. They have put plates on the rooftop of buildings (in the sun, rain) and tested them after years and they still have the same performance. The liquid armor will need to be tested for some time now before being introduced to the public.