To use your Arinesart's Enterprise Garage long sleeve crewneck t - shirt, just put it on like any other shirt. It's great for casual wear or for layering. When it comes to cleaning, remember to machine wash it cold and turn it inside out. Wash it with similar colors to avoid color bleeding. Only use non - chlorine bleach if there are stubborn stains. After washing, hanging it to dry is the best way to keep its shape and color. But if you're in a hurry, you can tumble dry it on cool or low heat. Stay away from fabric softener as it can make the colors fade. Also, don't iron it or take it to the dry cleaner, as these can damage the fabric.