Flying helmet every time , I am with Jay on this one.
Back in the 60s and 70s I used to wear an ex-RAF (or was it Royal Flying Core) model , which looked pretty good until it got as tatty as everything else in my wardrobe at that time!
Now I used a smarter back leather model (from Uncle Melvyn from memory) which does the job , and doesn't cause quite as much offence to SWMBO.