Endorphin Pro 5 Size:8.5 Push-Off: You experience even distribution

Push-Off: You experience even distribution from the front of the foot

this pack is 485ml/ 16oz

it is confidence you can count on

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Altra upgraded the waterproof upper with a no-sew overlay and 100% PFC-free recycled polyester mesh

Endorphin Pro 5 Size:8.5 Push-Off: You experience even distributionThis is the most advanced Endorphin Pro we've ever engineered. It is built to deliver a return on investment you can feel with every stride. At its core is a new dual density engine: a high performance fusion of PWRRUN PB and Super Critical PWRRUN HG for elite energy return. We've paired this with a re engineered slotted carbon plate that optimizes SPEEDROLL technology, offering a smoother transition and an explosive snap off the pavement. Finished