Endorphin Speed 4 - Black (M) Size:10.5 The Endorphin Speed 5 is

The Endorphin Speed 5 is built to go fast and feel smooth—whether you're pushing the pace on track night with friends or you're chasing a PR

women’s-specific mesh ventilation zones

the hard-pressed EVA plate in the midsole features a rockered design that helps deliver smooth toe-offs with less effort

They are custom-designed from the outsole to the exquisite wingtips to empower every step you take—from work to play—with all-day comfort

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Endorphin Speed 4 - Black (M) Size:10.5 The Endorphin Speed 5 isWe're all seeking relationships that go the distance. The Endorphin Speed 4 running shoe is here to fill the role. Designed as a race day shoe, its quickly proven itself much more, equally capable during long, moderate training sessions and sprints to the finish. Thanks to the just right combination of winged nylon plate, SPEEDROLL technology and PWWRUN PB foam, this cushioned running shoe provides the perfect balance of support, rebound and