Brand New NIKE RN 2018 Mens Shoes. Featuring an updated upper construction and new supportive features, the Free RN is ready to push the pace and help you reach your goals. Spandex has been added throughout the shoe's upper and laces, improving the overall comfort and fit by allowing the shoe to stretch and follow your natural running motion. The updated Dynamic Heel Fit uses a wide, stretchy strap and comfort collar to hug the ankle and heel, delivering lightweight support.