Nike Dunk Low MULTI-SURFACE TRACTIONThe Zoom Rival XC Women's Track Shoe is ideal for the cross-country runner who encounters unpredictable surfaces, made with a classic Waffle outsole and targeted flex grooves for durable traction and a natural ride.BenefitsFlywire technology locks your foot downPhylon midsole offers lightweight, responsive cushioningAnatomical heel is rounded to roll with the ground for natural range of motionDual-layer mesh upper with no-sew overlays provide ventilation and supportRubber Waffle outsole with four spike receptacles for durability and excellent traction over a variety of surfacesFlex grooves for a smooth transitionProduct DetailsLugs around the perimeter have a sharp, crisp shape to enhance grip in all conditionsWeight: 6.1 ounces (women's size 8)