The Sharp website is a very good place to start. http://sharp.direct.gov.uk/Sandymay wrote:good to have an idea what features I should be looking for.
Pay particular attention to "Getting the right fit", the best helmet in the world is no use if it comes off because it doesn't fit properly.
Only go for an open or flip front if you are fed up with your face and want to leave it behind on the road surface.
Imagine running as fast as you can on a road surface and diving face first onto the ground.
Now imagine doing it at 50mph.