THIS MEN'S SHOE IS FOR: The Brooks brand presents the Glycerin GTS 21 for runners who need extra cushioning and support from the GuideRails system; it has the APMA Seal of Acceptance. This model follows the Brooks Glycerin GTS 20.
GREAT SUPPORT: The Glycerin GTS 21 provides more support than the Glycerin 20 with the GuideRails system, great for various activities like road running, cross training, or going to the gym.
PLUSH IMPROVED FIT: A stretch bootie and warp knit upper offer a plush feel and flexible fit that moves with the foot.
SUPREME SOFTNESS: The Glycerin GTS 21 features nitrogen-infused DNA LOFT v3 cushioning for softness, responsiveness, and durability.
SMOOTH, STABLE TRANSITIONS: The design includes a broad platform for stability and smooth transitions from heel to toe for a soft running experience.