Nike SB Dunk LIGHTWEIGHT CUSHIONING AND SUPPORT, AT FULL SPEED. Lighter and more breathable than its predecessor, the Nike Air Zoom Fly 2 Men's Running Shoe offers responsive cushioning and a supportive fit for comfort on fast runs.Responsive Cushioning The Nike Zoom Air forefoot unit delivers low-profile, responsive cushioning.Stability Dynamic Support technology in the midsole provides lightweight stability without added weight.Supportive Fit The lightweight mesh upper features asymmetrical overlays throughout the midfoot for a supportive, adaptive fit that moves with you.More Benefits No-sew overlays create support and a seamless, plush interiorInternal heel counter wraps the heel for a snug, secure fitPlush contoured foam collar locks down your heelDual-density foam midsole for excellent cushioningIntegrated crash pad absorbs shock for smoother transitionsFlex grooves for natural, efficient range of motionProduct Detail Midsole offset: 8mm