Nike Free RN NN road running shoe for men. If you are looking for freedom, this road running shoe can help you free you. The springy and flexible, barefoot-like feel as well as the Flyknit upper ensure a comfortable walking experience. Made with Nike Grind. The outsole is made from at least 13% Nike Grind, a material made from remnants from shoe production. Lightweight freedom of movement Flyknit in the upper provides sock-like comfort with soft, elastic and breathable material that gives you a light, airy feel while running. The inner shoe is minimal yet elastic. Soft Mid-Feel The ultra-light midsole provides incredible comfort when your feet put on the road again and again. It is lighter, more responsive and softer than its previous versions. Secure hold. Embroidered eyelets for the laces ensure a secure fit. Pull tabs on tongue and heel make it easy to put on with one hand. Additional flexibility Laser-cut notches in the sole make this shoe more flexible. Not suitable for use as personal protective equipment (PPE)