My son wore this on every tropical vacation and during the summer. He is very fair and he did not have a single sunburn. It worked and looked cute. It fit him well (he is slender, but it wasn't too big). After a year of lots of use, the white fabric is getting a little worn/loose. I bought a different brand sunguard before and that shirt also dissolved, but at a quicker pace after a good year-two of use. Still worth a good year of sun protection.