Pokémon GO developer Niantic has unveiled an official screenshot of the Expedition Hat, an all-new avatar item that has been added to your wardrobe when Adventure Week 2017 went live yesterday, May 18. You can check it out in the image above. During the latest in-game event, Pokémon such as Omanyte, Onix and Sudowoodo will appear with greater frequency through May 25. Plus, your Buddy Pokémon will give you Candy after walking only one quarter the usual distance. Also during this time, all Poké Balls will be 50% off in the in-game shop.