Insect Shield® insect repellent and UPF 50+ sun protection combined - you are welcome! To heck with pesky, biting, swarming, buzzing bugs. This hat is treated with Insect Shield® and helps protect against mosquitos, ticks, and other biting insects. A wide brim, mesh vents and lightweight UPF 50+ fabric keeps you covered and cool on adventures in hot climates. And it floats.