An exoskeleton is an external structural mechanism with joints and links corresponding to those of the human body. Some exos have mechanisms on most of the human links, such as arms, while others only on specific joints. On the left (picture took at IROS 2013) the classic example of exoskeleton that helps to hold heavy items (sack) for long periods of time. On the right, robo-mate exoskeleton α version, assisting workers for tasks of lifting and lowering heavy weights in industry.
The robo-mate industrial exoskeleton have for objectives to be light in weight, user friendly, strong and robust from its aluminium structure.