• Why You'll Love It: The Endorphin Speed 4 is a highly versatile, responsive shoe that can double as a trainer and racing flat for those seeking a performance boost
• Category: Neutral
• Weight: 7.2oz
• Drop: 8mm

The Endorphin Speed 4 was designed as a race-day shoe, but it’s quickly proven itself to be much more. Take it for a run and you'll find it to be equally capable during long, moderate training sessions and sprints to the finish. Thanks to the “just right” combination of a winged nylon-plate, SPEEDROLL technology, and PWWRUN PB foam, this cushioned running shoe provides the perfect balance of support, rebound and forgiveness.

KEY 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.

SIZING GUIDE

• In general, remember to leave around a thumb's width of space at the end of your walking or running shoes.
• Widths for women:  2A = narrow;  B = standard;  D = wide
• Widths for men:  B = narrow;  D = standard;  2E = wide;  4E = double wide