Based on the pictures, I anticipated that this shirt would be denser than it is. In actuality it is extremely thin and almost translucent. I don't doubt its sun protection ability, but it shows whatever is under it, so I'm only wearing smooth skin toned bras. It is also somewhat clingy and refuses to lie flat. If I have a purse strapped crosswise over my body, the fabric bunches up. That said, the lightness of the fabric will be nice this summer for paddle boarding.