Nike ReactX Rejuven8 Men's Shoes Give your feet a rest. Made with soft and responsive ReactX foam, the Rejuven8 uses some of our best tech to create a recovery shoe so comfortable you'll want to wear it every day. ReactX upper and midsole surround your feet in soft, responsive comfort. Sticky rubber outsole adds grip even on slick surfaces. Extra room at the forefoot helps accommodate various foot widths. Ventilation holes help allow for breathability.