With their retractable cords, these headphones are unbeatable in terms of practicality. They also have soft, hinged ear clips which are an improvement on previous designs with regards to comfort and stability.
The sound quality on these is quite acceptable and fairly rich with a good base level for the type of headphone. Obviously they do not have the depth of sound one would get with big DJ style headphones, but they make up for this in wearability.
These are especially good for sport and commuting, and they also have a funky and nicely designed aesthetic, so will suit you if you like your headphones to be part of your outfit.
"Over ear" headphones are a great alternative to, and in my opinion an improvement on, the in ear style as they are soft and comfortable and don't fall out or get tugged out at inopportune moments.
A great choice for an on-the-move headphone