To wear this men's long sleeve shirt, simply button it up and adjust the collar to your liking. It's suitable for various casual and semi - formal occasions. When choosing a size, always refer to the size chart as different suppliers may have different measurements. To maintain the shirt's quality, it's recommended to wash it in cold water on a gentle cycle. Avoid using harsh detergents that could damage the sequins or the fabric. After washing, reshape the shirt and let it air - dry. If you need to iron it, use a low - heat setting and place a cloth between the iron and the shirt to protect the sequins.