Assuming you are referring to a cleaning a bulletproof vest, the process is actually quite simple. Just as you would with any other piece of clothing, start by gently removing any surface dirt and debris with a soft brush or cloth. If there are any tough stains, you can pre-treat them with a mild laundry detergent before washing. When you're ready to wash the vest, use cool water and a gentle cycle on your machine. Hang the vest to dry or lay it flat on a towel – avoid putting it in the dryer as this could damage the material. Once it's completely dry, give it a once-over with a lint roller or brush to remove any lingering debris.