I like this shirt even more than I expected to.  Not only does it keep the sun from burning my skin, but it is literally cool to wear.  I put  it on to garden in the hot sun one day and never felt sweaty or smothered by the synthetic fabric.  It is also attractive and easy to wear over my bathing suit.   Now that I have received the swim tights as well, my financial and temporal investment in sunscreen lotions will diminish significantly!