Military Products When getting ready for a patrol, convoy duty, bridge build, or other military operation in the desert, the last thing you should worry about is the heat. Stay focused on your task, and avoid the dangers of heat stress, by using the Military Cooling Products developed and manufactured by TechNiche International. Our combined Evaporative and Phase Change Cooling Military Vest is the only one of its kind on the market, and is designed for extended cooling relief. If you choose our Military Vest w/Built-In Hydration System, you will stay cool during your field operation, and have a cool drink.