The robot's abdomen holds all the controls, including the pressure valves and pump. The body can also hold a variety of sensors, according to Fraunhofer Research News. The creature was designed and fabricated using a 3-D printer, so its laser-sintered legs and body can easily be modified. The legs can be designed with varying load-bearing capabilities, for instance. And it's cheap to make, unlike mechanically engineered metal robots — "It can be discarded after being used just once, like a disposable rubber glove," says Ralf Becker, a scientist at Fraunhofer who designed it.