Nanuk Hard Case

There is a Nanuk ( Canadian Company) hard case that works well for Bromptons. Nanuk 970. We used two of them to travel to Portugal. Very large and heavy though so depending on airline, you may be charged a baggage fee. Had to remove the saddle, but there is plenty of room for helmet, extra clothes, etc… here's a link: https://amzn.to/4bdeV58