Nike flex 2016 rn running shoes mens these nike flex fury 2 running shoes are designed with a lightweight breathable mesh upper and to offer natural motion for a comfortable ride there is a lace up fastening padded ankle collar cushioned insole and flywire cables that provide lightweight support to the foot a phylon midsole with two layers of cushioning for a smooth ride and flex technology which uses grooves to the grip sole underfoot finished off with the iconic nike swoosh to the side