This just came in the mail today (took about a week from China). It's a hard case for your controller, and you can leave the flight sticks in. They should have included a case for the controller when we bought it... but this works well. Highly recommended.
Portable Storage Case Bag for DJI MAVIC AIR Lightweight Remote Control | eBay
Portable Storage Case Bag for DJI MAVIC AIR Lightweight Remote Control | eBay