In order to trust your run, you need to trust your shoes. The new Glycerin 20 is engineered with Brooks' softest cushioning yet for unparallel comfort over any distance. The all-new engineered mesh upper delivers just the right amount of stretch, creating a premium fit with breathable support. Redesigned with a DNA LOFT v3, nitrogen-infused cushioned midsole for effortless responsiveness and bounce, taking you from park runs to distance marathons in energising comfort.