EcoFlow has released a hat with solar panels and a smartphone charger. Two USB Type-A and Type-C ports are hidden under the brim of the Power Hat, but there is no battery in the hat. You can't charge your gadgets during a walk to recharge them later - you'll have to go everywhere with a wire running from your head to your smartphone. Taking into account all the panels and connectors, the EcoFlow hat weighs 370 g. That's almost 4 times heavier than a normal hats: impractical and uncomfortable. The Power Hat is IP65 protected and comes in two sizes for $130. The first batch is already sold out.