What helmet do i need to race Mini Enduro?
For Haldon you can race in Open Face Helmet but for safety you have to wear your helmet all times when your riding which includes transitions.
To be honest when I have raced in full face and then swapped to open face for climbs is not that much of a problem. In fact it feels good to swap helmets for the stages. I just clipped my helmet on my back pack did not notice it was even there.
The helmet rule from British Cycling is