UV sun protecting swim shirt

Raglan style shirt for long days of surfing or swimming in the sun. The tag says XL but it fits like a men's medium. I wear a large now and it fits like a compression shirt which I do not desire. So that is why I have listed as a medium. Only worn a few times, very clean. Only a small dirt-like spot on the front but it is so faint that it doesn't show well in pictures.