SAUCONY ENDORPHIN SPEED 4 - FIRST LOOK - BEST FOR TRAINING & RACING?

SAUCONY ENDORPHIN SPEED 4 - FIRST LOOK - BEST FOR TRAINING & RACING?
Not quite the maxed out PEBA based pwrrun pb midsole as the SAUCONY ENDORPHIN PRO 4, but the new version of the all-in-one trainer the ENDORPHIN SPEED 4 may possibly be your Swiss Army Knife shoe!
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