Good sun protection - Prana Lorelei Sun Top - Women's

The sleeves are long and it fits snugly (may want to order a size up) but I am pretty sure this will be great in the water. Don't know why the cuff part of the sleeve is loose rather than snug but since I got this on sale, not going to worry about that. As a rash guard, it fits well, As a sun shirt, it would be too tight. It is thick, like bathing suit material, so could get hot anyway. I actually bought this to go with the bikini of the same fabric.