How to use your Agent Fett sweatshirt is easy - just put it on and show off your style! When it comes to washing, make sure to turn it inside out and wash it in cold water with similar colors. Only use non - chlorine bleach if there are stains. After washing, hanging it to dry will keep it in the best shape, but you can also use a cool or low - heat tumble dry setting. Remember, fabric softener can make the colors fade, so skip it. And don't try to iron or dry clean it, as this could damage the fabric.