BCOOSS Summer Sun Hat for Women, Wide Brim UV Protection 。?Premium Paper Straw Woven - Tightly woven ensures the high durability. Lightweight and breathable design. Hand Wash Only ?Adjustable Size To Fit All: US Size: 7 - 7.25, Head Measurements:21.8 - 22.5 inches,brim Measurements: 4 inches, depth Measurements: 4.2 inches.There is an adjustment rope on the sun hat, which can be adjusted according to its own size. Adjustable chin strap holds floppy hat in place, even during windy day, and is easy to attach and detach ?Wide Brim For Full UV Protection - Designed with a wide floppy brim, this beach hat for women provides a perfect shade to your face, help protecting against direct exposure to harmful sun UV Rays and possibly prevent age spots, keep cool forever! An inner sweatband to help wick moisture away and ensure your utmost comfort