Styled after the popular T4 Hat, the TH4 Hemp Hat has a wider down-sloping brim than the TH5. The TH4 Hat is ideal for outdoor enthusiasts who want more protection from sun and rain. Not only do our Hemp Hats look great, but they have a soft linen-like look with a 'tough as nails attitude'. In fact, Hemp is the world's strongest natural fibre. It is breathable, and naturally resistant to UV light, mould, mildew and salt water. Tilley Hemp fabric has been tested and certified as having a UPF 50+; this is the maximum UV protection rating given.