This is an excellent reason to stop at AK and get a Jane-style (a la Tarzan and Jane) Minnie hat. I have one and love it. It's woven and then has a black and white ribbon with Minnie head prints on it. It was very hot one summer and DH and I HAD to buy hats, we just happened to be at AK at the time. I've worn it several times at home as well. I think it does a great job of keeping you cool since your hair doesn't end up getting as hot as it does in the sun. I've got dark hair, so it just gets very hot if the sun is hitting my head.