Description The Nike Free RN Distance 2 Men's running shoe features Lunarlon cushioning with large hexagonal flex grooves for more natural motion with the soft comfort you need for longer runs.The outsole provides natural freedom of movement and features hexagonal flex grooves that offer six points of flexibility, allowing your feet to move like never before.The lightweight Lunarlon cushioning system delivers miles of soft responsiveness. It combines soft foam and a lightweight Phylon layer to deliver a perfect blend of comfort and durable support to go the distance.The single-layer, engineered knit helps keep your feet cool, while Flywire cables integrated with the laces envelop your arch for adaptive, dynamic support.Partial inner sleeve envelops your forefoot for breathable comfortDeconstructed mesh heel provides support and breathabilityRugged rubber segments under the toe for enhanced traction and durabilityErgonomic heel ensures more natural freedom of movementWeight: 249.5 g (men's size 10)Heel-toe drop: 4 mmWhen they learned that Stanford athletes trained barefoot on the university's golf courses, three of Nike's most creative and innovative employees took the lead in developing a shoe that, like the barefoot, would offer natural lightweight comfort. The team spent eight years studying the biomechanics of runners in motion. The results allowed them to gain a deep knowledge of the functioning of the foot: the natural angle with which it is placed on the ground, the position of the toes, the pressure, etc. With this data, Nike designers were able to create a revolutionary, completely flexible running shoe.