Women's Endorphin Speed 4 racing an essential piece for every

an essential piece for every wardrobe

Super soft bikini liner made from bamboo

and quick training sessions

4-way stretch fabric for easy movement

Women's Endorphin Speed 4 racing an essential piece for everySaucony Endorphin Speed 4 The Saucony Endorphin Speed 4 is crafted to take your running to the next level, whether you're pushing for a personal best on race day or conquering long training miles. This lightweight shoe merges innovative technology with exceptional comfort to help you run faster and farther. Equipped with a winged nylon plate, Speedroll technology, and PWRRun PB foam, the Endorphin Speed 4 delivers the ideal blend of support, energy