Support and Speed The large forefoot Air Zoom unit is curved to bend in multiple directions. It provides energy return for fast and responsive cornering and offers a flexible court feel that moves naturally with your foot. A bottom-loaded Air Zoom unit in the heel adds cushioning and support. Stay Steady A tough plastic plate in the midsole and sturdy, wing-shaped pieces on both sides of the shoe help keep you stable. Soft and Smooth The responsive foam in the midsole feels soft and smooth while keeping you low to the ground and enhancing the sensation of court feel.