nike free rn 2017 bordeaux/metallic silver nike the nike free rn 2017 is a neutral running shoe that is designed for interval training or long-distance road running, particularly on smooth surfaces like concrete and asphalt. the features of the shoe make it ideal for short runs, while its compact design allows for easy packing and convenient carrying. now featuring an updated upper, the seamless circular mesh works by providing more breathability, therefore allowing the foot to endure longer distances. the design of the façade also includes reinforced areas that promote a sock-like fit. with its low-profile cushion, the free rn 2017 provides the feel of a minimalist running shoe. it has retained the auxetic design that’s present in its predecessor, which works by expanding and contracting in tandem with the foot movement.