I bought 1 pair of these for both my front and back panels on my stab/spike vest. I need the extra stab/spike/trauma protection. I also needed something that will pass through the metal detectors. They are light and easy to install. I hardly notice that I'm wearing the additional protection. Unlike the metal plates, these cannot be reshaped or modified. Nevertheless, mine works fine for me and I'm happy with it. The price is a little high but they are a specialty item and after all, how much is your life worth? As any Correction's Officer knows, working outnumbered amongst violent inmates with "bad wiring" means you wrestle with them regularly, and in prison anything goes. I'll take all the added protection I can get!