The Nike Free RN Distance 2 in this special edition colorway is specifically designed for the 2017 Boston Marathon. It has a weight of 8.8 oz and a 4mm heel-to-toe offset, providing optimal performance for runners. This shoe incorporates a free-floating, internal mesh bootie and Flywire cables to ensure a secure and comfortable fit. Additionally, the forefoot flex zone is made of a loosely woven fabric that allows for natural stretching, while the heel is supported by lightweight no-sew overlays. The cushioning system of the shoe consists of re-engineered Lunarlon foam fused to a lightweight IU carrier, delivering soft cushioning and a seamless transition. Furthermore, the shoe's Auxetic tri-star patterned outsole features six flex points that enable natural motion and provide excellent traction on various surfaces.