ICE Retro Fit Kit (GEN II) - Body Armor Vent (Large; Black)The ICE Retro Fit Kit panels feature our patent pending evaporation and ventilation EVAP Technology. Increase the surface area exposed to evaporative airflow. Above all, our technology produces continuous air flow between your torso and your body armor. The channels and holes designed into the panels move air through the backside of the armor. Airflow is created not only by hot air raising, but also your own breathing. Altogether these actions cause