Soak up the sun while staying cool with this ingenious cap crafted from breathable cotton material, featuring an integrated plastic fan powered solely by solar energy. Perfect for those bright, sunny days, the fan springs to life when bathed in sunlight, ensuring a refreshing breeze as long as outdoor conditions are bright. The cap smartly ceases operation when you step indoors or find yourself under shade. Designed with an adjustable headband, this versatile cap caters to both adults and children, making it a summer essential for outdoor activities. The cap’s circumference can be modified between 21"-23", and it measures 14"L x 7 3/8"W x 5"H in dimension.