This men's long sleeve shirt is a great addition to your wardrobe. To wear it, simply button it up and pair it with your favorite pants or jeans. When it comes to sizing, remember to check the size chart as each item has its own unique measurements. If you're used to US sizes, you might need to go up a size for Asian sizes. For maintenance, it's best to follow the care instructions on the label. Usually, you can machine - wash it on a gentle cycle with cold water and then tumble - dry on low. Avoid using harsh detergents as they can damage the silk and polyester material. With proper care, this shirt will last you a long time and keep looking great.