Kakadu Ultralight Summer Hat Soaka Breeze | Build in Chinstrap | Soak into Water for Extra Cooldown | Ventilating Mesh | Unisex Men Women Size 100% Synthetic Imported Kakadu Traders Australia |Light weight Summer hat | Build in Chin Strap The Matarial is made for soaking into Water to get an extra Cool Down Australian Style | Summer Hat for all outdoor activities as hunting | fishing | hiking | walking the dog or just going out into the City Ultra Light as made from special Micro-fibre Height: ca. 10 cm | Brim: 8 cm | Sizes | Small - 55cm | Medium - 57cm | Large - 59cm | Extra Large - 61cm | 2XL - 62cm | To measure head - simply place tape measure or string just above your ear and around your forehead (where you'd like the hat to sit) and this is your size | If you are in-between sizes, the larger size would probably fit better