This men's slim Korean style mid - sleeve shirt is a great addition to your wardrobe. To wear it, simply button it up and you're good to go. It's perfect for casual outings. When choosing a size, remember to check the size chart. If it's an Asian size, pick a bigger one for a better fit. For maintenance, machine wash it in cold water on a gentle cycle. Hang it to dry to keep its shape. Avoid using bleach as it can damage the polyester fiber material. With proper care, this shirt will last you a long time and always look stylish.