Full face helmets
Easy to recognize because of their protection around the chin. This kind of helmet construction gives it extra strength. However they can easily get warm and foggy.
http://www.best-motorcycle-gear.com/images/fullface_helmet.jpg


Hybrid helmets allow you to open the chin part of the helmet and slide it upwards. Often very useful for people with glasses.
http://www.best-motorcycle-gear.com/images/hybrid_helmet.jpg



Open face helmets
Open faced is also known as a three quarter motorcycle helmets. They are aimed to protect the ears and the side of the face. However this kind of helmet doesn't have any chin protection. Visors are often detachable.
http://www.best-motorcycle-gear.com/images/open_faced_helmet.jpg


Shorty helmets also known as half helmets and are the simplest form of a helmet. There is no side and chin protection. They look best when riding a cruiser or custom bike.
http://www.best-motorcycle-gear.com/images/shorty_helmet.jpg



Motor Cross helmets include a dirt cap and possibilities to place goggles.
http://www.best-motorcycle-gear.com/images/motorcross_helmet.jpg