To wear this shirt, simply button it up starting from the bottom. It's suitable for various formal business occasions. When choosing a size, always refer to the size chart as different suppliers may have variations. This shirt is made of polyester and spandex, so it's relatively easy to care for. You can machine - wash it in cold water with like colors. Avoid using bleach as it may damage the fabric. After washing, tumble dry on low heat. Hang the shirt on a hanger to keep its shape. And if you want to remove wrinkles, use a warm iron on the appropriate setting.