If you don't like the rain and having your head wet, you will love the idea of Sanpei by Legami
Legami is an Italian brand that has the best curious presents you will ever see, take a look at their page and you will love all the products!
This hat comes with a small bag, and it's great because it's foldable! It's big and of course is waterproof! Now you will never have your head wet again! ;)