Skiing and snowboarding aren't gentle on your body, especially if you're taking on a challenging run or plan on a long day. Now, however, technology might ease your burden. Roam Robotics has unveiled an exoskeleton built expressly to reduce the burden on your knees. Sensors in the exoskeleton gauge your intent and use a mix of air bladders and fabric actuators to automatically tweak the torque in your knees. There's a manual option, too, if you know what motion to expect.