Some of you will remember the free Shark S500 helmets that were being given away with TWO mag last year. I've been using mine every since; always found it very stable.
However, today it excelled itself........I rode from Brecon to Cardiff (about 45 miles) at sometimes stupid speeds (it was hot and I needed to keep cool, officer!!) into a headwind and it didn't blow off even though I left Brecon without doing up the strap
Only found out when I got home.
Can't help thinking that I'm very lucky.