Reviews Description: Solar and battery powered fan keeps you cool in sun and clouds. Cool hat for a hot day, exploring for local wildlife, working in the garden, watching your favorite sport or any other outdoor activity. Our weather-proof hat of natural linen straw uses built-in solar cell or 2 AA batteries to power a small fan that directs a constant cooling breeze to your forehead. Gives you power in or out of the sun. Perfect for the sportsman who has to keep his cool. One size fits all with adjustable comfort liner. With 3-way solar/battery/off switch. Batteries not included.