Lychee Summer Cooling Peaked Cap Hat Solar Power Mini Cell Fans for Golf Outdoor Travel Applicable for visor or cap for most outdoor activates under sun Utilizes sunlight to emits lights to photovoltaic Solar Panel and transfer light energy into electric energy that drives the micro-motor to make fan working Suitable for students while having outdoor lessons in summer Also suitable for outdoor activities like: Hiking, fishing, climbing, playing golf, watching ball game and other outdoor activities Makes you feel comfortable and cool