This cooling hat is great enough that you cannot miss. For example, it has detachable fan, strong wind, solar and USB charging. And it is also easy to charge just like how you charge your phone. Hat circumstance and fan angle can be adjusted as you want. This cooling hat is not only energy-saving, safe but also long-lasting, and it is cool enough to make you enjoy the summer better when you are at outdoor having activities like fishing, climbing and camping.It is constructed of cotton material.The length of this product is 32cm and width is 18cm. It is suitable for beach, shopping, dating and traveling.Item Name: Fan Baseball Hat Material: CottonStyle: FashionGender: WomenSeasons: SummerBattery Capacity: 800mAh Features: Detachable Fan, Energy-saving, Adjustable Hat Circumstance Size Details:L: 32cm/12.6", W: 18cm/7.09"(Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Fan Baseball Hat 1 x Charging Cable