How to use this Tropical Slasher long - sleeve t - shirt? Just put it on and enjoy the comfort! When it comes to washing, remember to turn it inside out and wash it in cold water with clothes of similar colors. If it gets dirty, you can use non - chlorine bleach when necessary. For drying, hanging it up is the best way to keep its shape. But if you're in a hurry, you can tumble dry it on cool or low heat. Be careful not to use fabric softener because it might make the colors fade. And don't try to iron it or send it for dry cleaning as it could damage the fabric.