Sun Visor Hat with Fan: Sun visor hat with fan. Comfortable fit the head, not tight, stable, and not easy to fall off, which makes you feel cool in this summer. USB Powered: The sun hat has a built in electric fan with three gears. After fully charged 3 hours , it can work continuously for 8 hours. Adjustable Buckle Strap: Outdoor sun hats, adjustable buckle strap design 48cm-58cm, adjust the size easily according to your needs. Both for kids and adults. Sun Protection Hat: Sun hat with fan, empty top design, permeability, bid farewell to heavy and sultry. Perfectly suited to travel needs and is USB rechargeable. Widely Used: Sun protection hat suitable for golf, hiking, running, cycling, farming, fishing, shopping, beach, travel, mountaineering, parties and other outdoor activities. Specification: Material: Blending Size Chart: Adjustable:48cm-58cm /18.90inch- 22.83inch Package Includes: 1 Sun Visor Hat with Fan 1 USB Cable Note: Please allow slightly errors due to manual measurement and different monitors.