DickiesDickies Men's Short Sleeve Work Big and Tall Button Down Shirt, Black, 5XL Plus UK

Do these shirts need ironing? Are they wrinkle free? I am looking for a shirt that can come out of the dryer ready to wear with no need to iron.

For the "long" size, is that closer to the large size in the neck and chest? Or would be more like me extra-large?

Do these button up to the neck?

How is the breathability? I work outside in high humidity trying to find a light shirt to wear