After a good few knocks WITH a helmet on that resulted in minor concussions. I haven't ridden a day without one since. I find that it gives me a lot more confidence to try new tricks on bigger features without much doubt in my mind. I wear a giro helmet that's the same style wise as I believe the Bern Watts with the visor. It has a ratchet system in the back similar to Boa/a hardhat that fits pretty nice.