These men's casual shirts are a great addition to your wardrobe. When you receive your shirt, simply put it on and adjust the single - breasted closure. They're suitable for various casual occasions. Since they're made of polyester and spandex, they're comfortable and stretchy. Remember to check the size chart before buying, especially if it's an Asian - sized item. For maintenance, you can machine - wash them in cold water on a gentle cycle. Hang them to dry to keep the shape and fabric quality intact. Don't bleach the shirt to avoid color fading.