About this item 【Material】100% High Quality rip-stop Terylene,Water repellent / stain resistant,Machine washable . 【Drawstring closure】 sun hat size is adjustable for head circumference 54-58cm,the back adjustable drawstring elastic buckle fits a variety of head shapes. 【9CM hat brim】: wide and long enough to shade forehead, eyes and cheeks from sun uv ray. 【UV protection】: block UVA and UVB rays to help prevent sunburns and long-term skin damage. The tight weave construction offers lasting sun protection against the full spectrum of sunshine 【Sun Protection】: This sun hat features built-in UPF 50 shielding, it could block 97.5% or more of sun UV rays. an ultra-sweat-wicking headband, and the mesh part keeps your head cool and ventilated even on hot and humid days, ideal for various outdoor activities