The Glycerin 20 Running Shoe from Brooks allows you to fully concentrate on your run - 100%! An optimal fit, the soft cushioning and the soft transitions let you forget about your running shoes and you can carefree complete each of your kilometers. The Glycerin 20 is equipped with DNA Loft v3 cushioning that is not only super soft, it has also been optimized for a dynamic, lightweight and durable running feel with soft comfort.