Here's how to use and take care of your 'Classic Harkonnen' T - shirt. Just put it on like any regular shirt and enjoy its comfort throughout the day. When it's time to clean, toss it in the washing machine on a cold cycle. Make sure to turn it inside out and wash it with clothes of similar colors. If it gets dirty and needs a bit of a boost, you can use non - chlorine bleach. After washing, it's best to hang it to dry. But if you're in a hurry, you can use the tumble dryer on a cool or low - heat setting. Remember, fabric softener can make the colors fade, so skip it. Also, don't iron or dry clean the shirt as it might damage the fabric.