This is a simple shirt from Uniqlo. The beautiful blue color works well on its own, and it seems versatile enough for office casual wear. It has a relaxed fit, so it might fit someone who usually wears a size M. I've worn it 2 or 3 times. I'm selling it because the size doesn't fit me anymore. The color in the second image is closer to the actual color. #MUJI #ColorShirt