This shirt is super easy to wear. Just put it on like any other shirt and pair it with your favorite jeans or shorts for a casual look. When it comes to washing, it's best to use a gentle cycle in cold water to keep the color and pattern looking good. Avoid using harsh detergents that could damage the fabric. After washing, let it air - dry to prevent shrinking. As for sizing, always double - check the size chart as different suppliers have different measurements. If you're in between sizes, it's usually better to go for the larger one for a more comfortable fit.