NIKE Women's Lunaracer+ 3 Running Shoe Synthetic Rubber sole Dual-layer mesh tongue with a sweat-wicking outer layer that pulls sweat away for comfort Ultra-soft collar lining for a comfortable, snug fit Reflective elements for visibility in low light Waffle pistons on the outsole for added cushioning and response Deep cuts along the length and width of the base for flexibility and a more natural, efficient stride