This men's casual spring shirt is a great addition to your wardrobe. To wear it, simply button it up using the single - breasted closure. The square collar gives it a classic look. When it comes to sizing, always refer to the size chart as different suppliers may have different measurements. For example, if you're used to US sizes, you might need to adjust for Asian sizes. As for maintenance, this shirt made of spandex and polyester fiber can usually be machine - washed on a gentle cycle. After washing, you can dry it in a dryer on low heat or hang it up to air - dry. It's a durable shirt that will keep you looking stylish throughout the spring season.