The Endorphin Speed 4 is made for everyday training and speed training.

Features:

• Smooth SPEEDROLL technology for effortless speed, smooth turnover and propulsive forward motion
  
• PWRRUN PB foam is a true unicorn, offering the best combination of cushioning and energy return of any foam on the market
  
• Re-engineered winged nylon plate provides reinforcement while maintaining flexibility
• Support: Neutral
• Offset: 8 mm
• Weight: 7.2 oz