The Kaiola Surf Hat gives us a customizable, comfortable fit with its shock-cord adjuster, neoprene headband, and floating brim. We appreciate the quick-dry materials and solid UPF protection, and overall it both looks good and performs well in the water. That said, it offers the least sun coverage of the hats we tested, and the neck strap isn’t particularly secure—making it more likely to come off during a fall or in fast-moving water. Overall, it’s a sleek, functional hat with moderate protection, best suited for river surfers who prioritize fit and style over maximum sun coverage.