Our Malia ultra-wide brim boater is the perfect balance of delicate and practical. Made of 100% wheat straw, this hat features a white cotton tie that shields the back of your neck and wraps around to secure under your chin. Bonus: You can customize the fit using the size adjuster hidden in the sweatband under the label. Our Malia has a crown height of 4-1/4in. and a brim length of 5in. This hat is one size fits most. It is 57cm with a size adjuster hidden under the label that allows you to size down.