On Ear Headphones
On ear headphones are typically light-weight and rest on the ear rather than around it.
On ear headphones are the popular choice among youth and young professionals as they hold up well to regular usage.
They are usually the size of the actual ear, and tend to be quite compact. Because on ear headphones don't cover the actual ear but rest against it, it can be difficult to block out outside noise. Thus, not recommended for professional use.