Nike Pegasus 41 Men's Road Running Shoes  Springy foam plus snappy Air Zoom units equals our most energized ride.  Responsive cushioning in the Pegasus provides an energized ride for everyday road running. Experience lighter-weight energy return with dual Air Zoom units and a ReactX foam midsole. Plus, improved engineered mesh on the upper decreases weight and increases breathability.   Responsive Ride  ReactX foam midsole surrounds forefoot and heel Air Zoom units for an energized ride. It's 13% more responsive than previous React technology.  Waffle-Inspired Traction  Signature waffle-inspired rubber outsole provides traction and flexibility.