This is a really cool men's blue casual shirt. To wear it, just put it on like you would any other shirt. The single - breasted closure makes it easy to put on and take off. When choosing a size, remember to check the size chart carefully as different suppliers may have different sizing. If it's an Asian size, go for a bigger one. For maintenance, it's best to wash it in cold water with similar colors to keep the blue color vibrant. You can machine - wash it on a gentle cycle. Hang it to dry to avoid any shrinkage. With proper care, this shirt will be a great addition to your wardrobe for a long time.