Our Ivory ultra-wide brim high crown statement sun hat is made of 100% hand woven sisal straw. It features an open weave pattern on the brim that creates eye catching shadows and is finished with a simple bow tie trim. Bonus: You can customize the fit using the size adjuster hidden in the sweatband under the label. Our Merrick has a crown height of 5in. and a brim length of 5-1/2in. This hat is one size fits most. It is 57cm with a size adjuster hidden under the label that allows you to size down.