The Nike Free Run+ 3 Shield running shoe blends the strengthening and injury prevention benefits of barefoot running with the winter protection of Shield. DWR treated, tight weave mesh upper with highly reflective overlays provides protection and comfort in any conditions. Sculpted Phylite midsole/outsole adds lightweight support and cushioning. Deep Nike Free sipes enhance flexibility for a barefoot-like ride. BRS 1000 carbon rubber heel and environmentally preferred rubber offer durability. Waffle piston outsole enhances cushioning and response. Wt. 8.8 oz.