Feel the freedom with every stride in the Brooks Glycerin Flex! This rule-bending running shoe delivers flexibility and luxurious cushioning to control your run. Stay in tune with your stride as the engineered flat knit upper moves with your foot. FlexZone™ midfoot grooves combine with a podular forefoot design for flexible support. Enjoy soft landings and electric lift-offs under the nitrogen-infused DNA TUNED midsole. Luxurious and flexible, the Brooks Glycerin Flex lets you run on your own terms! Who's it for? Neutral runners who want a shoe with flexible support for daily road miles. Key Features: Unleash your feet: Strategically placed asymmetrical midfoot flex grooves combine with a podular lateral forefoot for support and flexibility. Powerful softness: DNA TUNED with nitro-infused cushion for plush landings and electric toe-offs. Tune into the run: Engineered flat knit upper provides a comfortable fit that moves with you. Strategic flex grooves provide a smooth and flexible ride from landing to lift-off.