This men's casual shirt is a great addition to your wardrobe. To wear it, simply button it up and adjust the collar to your liking. It's suitable for various casual occasions. When it comes to sizing, remember to check the size chart carefully as different suppliers may have different measurements. If it's an Asian - sized shirt, opt for a larger size for a better fit. For maintenance, you can machine - wash it in cold water with like colors. Hang it to dry to keep its shape. Avoid using bleach as it may damage the fabric. With proper care, this shirt will last you a long time and always keep you looking sharp.