The Maxx-Dri Vest 4.0 is the pinnacle of body armor ventilation and cooling technology. Invented by a Police Officer, it features a patented new material and design elements for improved body armor ventilation, body armor cooling and comfort. The Maxx-Dri Vest 4.0 is once again changing the game when it comes to safety for those who wear concealed and external body armor carriers. Over 15,000 Five Star Reviews from the nearly 200,000 police officers, soldiers, first responders, and operators around the world who trust in their Maxx-Dri Vest every single day. When you are more comfortable, you are more focused. When you are more focused, you are safer. When you are safer, you go home alive. Why be miserable when you can be Maxx-Dri?