[ONE SIZE FITS ALL]- Our Solar Fan Hat features a rear elastic drawstring, ensuring a snug fit for both men and women with head sizes ranging from 22" to 25". Designed for lightweight, comfortable wear throughout your outdoor adventures. [SOLAR POWERED COOLING]- Stay refreshed with the built-in solar-powered fan of our outdoor fishing hat, offering a cool breeze to beat the heat during outdoor adventures. [DUAL POWER CAPABILITY]- Harness the power of the sun and modern technology with its solar energy and charging interface, combining nature's energy with technological convenience for an enhanced outdoor experience. [ADJUSTABLE AND SAFE]- Equipped with a built-in adjustment chip, our solar fan offers customizable wind speed settings. The soft fan design is removable and washable, ensuring safety and comfort without compromising on functionality. [HIGH-QUALITY MATERIALS]- Crafted from soft and breathable fabric, our personal fan sun hat absorbs sweat and disperses heat effectively. Utilizing single crystal solar energy, the solar fan delivers a powerful power supply. Made of lightweight PVC material, it's comfortable to wear without feeling cumbersome. The built-in high-speed motor ensures stability and a quiet cooling effect. [EXTENSIVE SUN PROTECTION]- Featuring a 4.72-inch wide brim design, this summer hat offers superior and expansive protection for your face and neck, shielding you from harmful sun exposure