Name: Womens Nike Free 3.0 shoes white grey lime
Nike introduced the Free concept in 2005 as a way of conjugating the principles and advantages of running barefoot to strengthen the feet and legs with the protection and traction of a training shoe. Nike Free 3.0 attempts to simulate barefoot running while wearing a shoe. As this shoe allows the muscles in the foot to gain strength by providing less constriction, runners are advised to gradually break into the shoe rather than immediately running long distances as to prevent muscle cramps and other discomforts.