This men's casual long - sleeve shirt is a great addition to your wardrobe. To wear it, simply button it up through the single - breasted closure and adjust the turn - down collar to your liking. It's perfect for daily casual outings. When it comes to sizing, remember to check the size chart carefully as different suppliers may have different size guides. If it's an Asian - sized shirt, go for a bigger size. For maintenance, you can machine - wash it in cold water with similar colors. Avoid using harsh detergents. Hang it to dry and iron it on a low - heat setting if needed. This shirt made of polyester and spandex will keep you comfortable all day long.