The Explorer Bag(s) are used to send your Pokemon out on Rumble Missions.
How to obtain it
1 Explorer Bag can be purchased from the Item Shop, another 2 are obtained from completing your first and second Badge Case, and the last 3 can be randomly found by your Pokemon while they're Rumbling.
How to use it
If you own at least one explorer bag, you can go to the "Rumble Areas" page - accessed through the 'Pages' tab, and you will see an option to send a Pokemon of your choice to any area you want.
- Explorer Bags are not tradeable as they are Key Items.