Adjustable. Standard fit is 57 (fits most, can’t be made larger), with adjustable option to size down to 55cm. However we just added a size 59cm as well, with option adjust to a 58cm. Inside the sweatband is the adjustable mechanism to size your hat to fit you exact.
Brim Measures 10cm / 4 inches
Made of wheat-straw
*For best fit, we recommend measuring the circumference of your head for sizing.