These stylish men's dress shirts are perfect for smart - casual occasions. To wear them, simply button up the single - breasted closure and adjust the turn - down collar. Since they come in different sizes from various suppliers, always check the size chart before buying. For Asian sizes, it's advisable to choose a bigger size. When it comes to maintenance, these shirts made of polyester and spandex can usually be machine - washed in cold water. Use a gentle cycle to keep the printed flamingo pattern looking sharp. Hang them to dry to avoid any shrinkage, and then you're ready to wear them again.