Why is under Armour spelled with au?

Related questions

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Tags

1. #number
2. #because
3. #still
4. #chose
5. #company
6. #testament
7. #founded
8. #armor
9. #vanity
10. #plank
11. #under
12. #riches
13. #success
14. #british
15. #kevin
16. #available
17. #itself
18. #spelling
19. #armour