I didn't have to put sunscreen on all day and I am not burnt. Of course it's only SPF 30 so if you're sensitive, you might still need sunscreen.
Doesn't the product description even say to wear sunscreen? If you have a thin jersey, you should wear it underneath, as well. Remember that a bad sunburn is not the worst thing you can get from too much sun exposure.
Fall down six times, get up seven. My Blog/Journal: Fat Athlete