Beach Sun Straw Hats for Women, Summer Sun Protection Foldable Packable Wide Brim Hat1. Attention Please: Measure your head size before purchasing. This hat comes in only one size. The head circumference is approximately 22. 1 22. 8 inches, and the brim is about 3. 3 inches. 2. How to adjust the head circumference: If the hat circumference is too large,you can tighten the drawstring under the sweat band by 2 3cm to fit the head. 3. Material features: Made of 100% paper straw ,the hat is soft, breathable and lightweight, providing you