laser perforated panels target ventilation to high heat zones
SAUCONY ENDORPHIN SPEED 4
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Endorphin Speed 4 ! , SPEEDROLL, PWRRUN PB Endorphin Speed 4
- Re-Engineered Winged Nylon Plate
- Serious Step in Comfort
Super Responsive Sockliner (SRS) - Improved Race-Ready Fit
- SPEEDROLL
- Winged Nylon Plate
- PWRRUN PB
- (Race Run), (Speed Run)
- Offset 36/28 . ( 8 .)
- 233 / 206
Pendular energy recycling system enhances stride efficiency
