A Mobile is sculpture suspended in midair with delicately balanced parts that are set in motion by airflows. They may be very simple in design, or be very large and complex, made up of many hundreds of individual parts. Some larger mobiles may show little movement due to their weight, but most will move and change positions continuously in the slightest breeze. This art form was in many respects invented by Alexander Calder.

The displayed mobiles are based solely on the designs of the founder of MomentumMobiles, Sascha Raftović. He takes care of the whole design and construction process himself in his workshop based in Hamburg, Germany.