The essential sun hat is made of high quality cool material,lightweight and breathable,not easily deformed,and suitable for various outdoor activities Summer hats size is 22-22.8 inches,and the back is adjustable.The style is simple and fashionable,and can achieve good wearing effects no matter how it is paired with any clothing Our Beach women's sunscreen caps is wide brim,protection from sun rays by covering your eyes and face, helps you stay cool as you enjoy your outdoor activities in the sun This sun protection hat can be used for casual daily wear or outdoor, ideal for golf, beach, camping, hiking, tourism,jogging, running, walking or other sports and activities.It also nice chioce of gift for friends and family Women's summer hat also features foldable and packable easy carrying when traveling