Improved one-to-one fit - updated, circular-knit upper Encourage natural footstrike - Low-profile cushioning and rounded heel Flexible cushioning - Auxetic tri-star outsole pattern expands with your step An adaptive, supportive fit - Dynamic Fit technology with Flywire cables integrated with the laces Extra support - minimal, moulded sockliner mimics the curvature of the foot Enhance traction and durability - segments of solid rubber under the toe and heel Offset: 8mm (14mm/forefoot, 22mm/heel) Last: QD-39 Pick up the pace with Nike's Free RN 2017 Women's Running Shoe. Made for comfort, in a new, lightweight version, the Free RN 2017 Women's Running Shoe features reduced layers and weight. Enjoy support and flexibility as the breathable circular-knit upper and a tri-star outsole pattern adjust to each and every step. The Free RN offers an improved natural footstrike, flexible cushioning and an adaptive, supportive fit.