To use your Ninjaink firehouse sweatshirt, simply put it on and enjoy its comfort. When it comes to cleaning, throw it in the washing machine on a cold cycle, and make sure to turn it inside out and wash with similar colors. If it gets dirty and needs bleaching, only use non - chlorine bleach. After washing, you can hang it to dry for the best results, but if you're in a hurry, you can tumble dry it on a cool or low - heat setting. Just remember, fabric softener can make the colors fade, so skip it. And don't try to iron or dry clean this sweatshirt to keep it in good shape.