Stay perfectly tuned into every mile with the Men's Brooks Glycerin Flex Running Shoes. Engineered for runners who crave a blend of high-end softness and natural movement, the Glycerin Flex introduces the innovative DNA TUNED nitrogen-infused foam. This dual-cell technology utilizes larger cells in the heel for plush landings and smaller cells in the forefoot to facilitate powerful toe-offs. The standout FlexZone technology and integrated midfoot flex grooves allow the shoe to mirror your body's preferred motion path, delivering a smooth transition from landing to takeoff. Wrapped in a breathable flat knit upper that moves with your foot, the Brooks Glycerin Flex Running Shoes provide a premium, flexible fit for long road runs, gym workouts, and everything in between.