100% Cotton Made of 100% Good Cotton. Breathable, Soft, Stylish and Comfort One Size Fit Most. Hat circumference 22.5",Brim 2.3", Crown 5.5" UPF >= 50. It protecting the sensitive scalp from harmful Ultraviolet Solid Color features make it easy to match any types of your clothes Soft cotton makes it packable, so you can bring it everywhere easily Unisex style design makes it available for both women and men.