What does a helmet do?

For starters, a helmet keeps your head warm and dry while also protecting you from the elements. The second and most important function a helmet serves is to protect your 'nut should you get knocked off. A helmet can't protect your head against all-foreseeable high speed and low speed impacts, as there are a number of accidents that can take place. The use of a well-fitting, securely fastened helmet can minimise the risk of death or permanent impairment due to head injury.

There are broadly two types of helmets: full-face (where a chin bar and flush-fitting visor cover the face and chin), and open-face (sometimes referred to as Jet-type helmets) where the face and chin are exposed. The type you choose depends largely on what type of riding you plan to do and what level of protection and comfort you desire.