For lightweight support to help you run your fastest, Nike Air Zoom Pegasus 32 running shoes are highly responsive and secure. A crash rail underfoot acts as a cushioning device upon impact to help smooth out your footstrike. The breathability and awesome smoothness of the upper provide an updated look and enjoyable feel.Upper: Partial mesh inner sleeve wraps the foot for plush comfort. Internal heel counter secures the back of the foot. Engineered mesh provides ventilation and support. Flywire cables wrap the midfoot and arch for added support and a secure, comfortable fit.Midsole: Nike Zoom Air unit combines pressurized Nike Air and internal fibers to create cushioning that springs back. Cushlon foam midsole provides soft and springy yet responsive cushioning. Removable insole.Outsole: Waffle outsole delivers durability and multi-surface traction.