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Runners Who Demand the Best: The Glycerin GTS 21 is ideal for runners who prioritize maximal cushioning while seeking additional support from our trusted GuideRails holistic support system. This version of the Glycerin 20 has been granted the APMA Seal of Acceptance, ensuring it meets the highest standards for foot health.
Innovative GuideRails System: The Glycerin GTS 21 is the more supportive version of the Glycerin 20. The innovative GuideRails holistic support system expertly guides your body along its natural motion path, minimizing excess movement. Whether you're road running, cross training, or hitting the gym, this shoe ensures a stable and controlled experience.
Improved Fit with Internal Stretch Bootie: Experience ultimate plushness with the internal stretch bootie, which effortlessly surrounds your foot and accommodates your stride. The newly engineered warp-knit upper is both breathable and flexible, ensuring a comfortable fit that stays soft against your foot.
Nitrogen-Infused Cushioning: The Glycerin GTS 21 offers supreme softness with nitrogen-infused DNA LOFT v3 cushioning. This cushioning is designed to be lightweight, responsive, and durable, providing unparalleled plush comfort with every step.
Smooth Transitions and Stability: The broad platform stabilizes your foot, promoting smooth heel-to-toe transitions. This ensures a supremely soft and comfortable running experience, enhancing your overall performance and enjoyment.