Satisfy your need for speed with the light and responsive Nike Flex RN running shoes. Predecessor: Flex 2017 RN. Support Type: Neutral to underpronation (supination). Cushioning: Lightweight flexible response. Surface: Road. Differential: Not provided. Circular-knit upper and lightweight synthetic overlays provide a great fit and feel. Dynamic Fit technology utilizes Flywire cables built into the lacing to promote an adaptive and supportive fit. Lace-up closure. Lightly padded tongue and collar. Breathable fabric lining offers a great in-shoe feel. Minimal molded textile footbed. Phylon midsole features two levels of cushioning to promote a smoother ride. Tri-star outsole pattern supplies lightweight flexible cushioning. Rounded heel encourages a natural heel strike. Rubber segments under the toe and heel deliver lasting traction and wear. Imported. Measurements: Weight: 9 oz Product measurements were taken using size 12 width D - Medium.Weight of footwear is based on a single item not a pair.