“This hat is excellent, particularly for watersports. It is well ventilated and cool in the hot South Carolina summer and dries off quickly when wet. I can certainly recommend this. I am right on the border of a small and medium, so purchased the medium as recommended in the sizing guide, however, I should have bought the small as I have to tighten all adjustments to their maximum to keep the hat on in the wind. The sizing is my only complaint and the reason for 4 * not 5.”