Here's how to make the most of your Blue Shell T - shirt. Wear it casually or dress it up - it's very versatile. When it comes to washing, just throw it in the washing machine on a cold cycle, and make sure to turn it inside out and wash it with similar colors. Only use non - chlorine bleach if it gets really dirty. After washing, you can either hang it up to dry for the best look, or if you're in a hurry, tumble dry it on a cool or low - heat setting. But don't use fabric softener as it might fade the color. And remember, no ironing or dry cleaning needed. This way, your shirt will stay in great shape for a long time.