When not in use, it wraps around your iPhone and acts as a bumper case, but should the need arise when you need that last minute charge, or perhaps give some juice to a friend or desperate stranger, unwrap it, plug one end of the Lighting cable into your iPhone, and the other end into another iPhone. The idea here is to take power from one iPhone and transfer it to another. Of course there are some problems with this concept, such as how will which iPhone know to charge the other one? Perhaps an app could be developed for that. There is also the issue of the clip that holds the cables together which looks like it could be easily lost.
However Juice Up is currently a concept and not a real product, but it does sound promising and we wouldn’t mind seeing it made a reality. What do you guys think?