TH5 Hemp HatUPF 50+ Sun Protection Made in Canada Guaranteed for Life The TH5 Hemp Hat from Tilley Endurables is natural and tough, built for endurance and longevity. Hemp fabric is very much like cotton, so it breathes extremely well. The nature of this fabric is that it does fade with continuous sun exposure, creating a more unique hat as time goes by. Tilley recommends you size up to ensure the hat is worn low and slightly loose, but it's entirely up to you