Researchers have created a wearable device they say can extend energy while providing assistance for walking and running. The robotic device, called an exosuit, is described in a study in the magazine Science. Researchers from Harvard University’s Wyss Institute say the exosuit demonstrates great possibilities for future inventions of lightweight wearables that could have mass appeal. Many wearable assistive devices developed in the past have been designed mainly to help people with physical disabilities. The new exosuits could also help disabled people. However, they could also provide energy and speed to everyone. The device is about five kilograms. It was built to be “simplified and nonrestrictive” compared to other wearable devices.