Take strength with the Nike Air Zoom Pegasus 38 shoe. Ensuring the fit loved by the runners. The shoe is equipped with a brand new cushioning unit on the forefoot and foam for maximum responsiveness. The result is a durable, lightweight shoe designed for your everyday runs. Nike React foam in midsole for lightness. elasticity and strength. More foam means more cushioning. No bulk. The Air Zoom unit in the forefoot is twice as large as the previous versions. This provides greater elasticity with every step. It is closer to the foot for better reactivity.