Flexibility; Moderate: The more flexibility that you have in the midsole and outsole, the more you can move naturally. An updated mesh upper stretches with each lunge and move. Stability: High: The more supportive the shoe, the more stability it can give to your stance. A combination of tuned support and intentionally placed cushioning helps you feel secure with every step. A heel Air Zoom unit combines with a plastic plate and rubber cage in the heel to give you stability while lifting weights. Cushioning: High: Cushioning under the forefoot and heel helps soften the impact of your workout. The heel Air Zoom unit combines with a soft foam midsole to help keep you comfortable from the gym to wherever your day takes you. Comfortable Fit: Soft, breathable mesh blends seamlessly into the design and adds comfort with each step. FZ1689-110