Thank you for sending in your idea, Alan! Your diagram is very clear and well labelled. I like how you have included measurements so we know exactly if the hat will fit us and it's great to know what materials the invention is made from. What a fun idea to go invisible by just putting a hat on, I'm sure many people would like to try this invention. Great that you have thought of what sort of energy the hat uses, nice to see that it's run off renewable energy. Great work, Alan!