Men's Endorphin Speed 4 Size:9 Living Lining provides consistent temperature

Living Lining provides consistent temperature regulation without adding bulk or weight

keeping feet dry

Fast and easy access through compression strap side-release buckles

Materials (Total recycled content): about 25% – Polyester: about 93% recycled

testing standard used by U

Men's Endorphin Speed 4 Size:9 Living Lining provides consistent temperatureWho helped you fall in love with running? A cheering parent? A PB dedicated friend? We're all seeking relationships that go the distance. The Endorphin Speed 4 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, the Endorphin Speed