It might sound like something out of a science fiction novel, but a wearable exoskeleton that that fits over your arm and makes you stronger is very real.

A group of four students at the University of Pennsylvania recently developed and built the Titan Arm to help people who've lost control of their limbs for medical reasons or who need the extra strength to avoid injuries at work.

Nick McGill, one of the student inventors on the project, says the Titan Arm can "augment your strength on a bicep curl by up to 40 pounds ... and, in the physical therapy realm, track your joint motion."

For their work on the Titan Arm, the students recently won the prestigious James Dyson Award, splitting the cash prize with Penn.

Will you be able to pick up a Titan Arm at your local Sharper Image in the next few years? We'll have to wait and see.