the columbia wrangle mountain straw sun hat in natural is a casual wide brim hat made by one of the top outdoor apparel brands. this sun hat is made from rush straw and has venting in the crown to keep you cool. there is a partial sweatband inside the hat for comfort and the chin strap helps you maintain a secure fit.hat details:made of 100% rush strawventing in the crownadjustable chin strap10cm wide brim13.5cm high crownhat sizing info:small - 55cm medium - 57cm large - 59cm