THIS WOMEN'S SHOE IS FOR: The Glycerin GTS 21 is for runners who want ample cushioning and additional support from the GuideRails support system. This Brooks Glycerin GTS 21 has earned the APMA Seal of Acceptance. Predecessor: Brooks Glycerin GTS 20.
GREAT SUPPORT: The Glycerin GTS 21 provides increased support compared to the Glycerin 20. The GuideRails support system supports your body in its natural motion path while controlling excess movement. Ideal for various activities including road running and cross training.
PLUSH IMPROVED FIT: The internal stretch bootie gives a plush feel and moves with your foot. The engineered warp knit upper is breathable and allows for a flexible, accommodating fit.
SUPREME SOFTNESS: The Glycerin GTS 21 offers ultimate softness and comfort, with nitrogen-infused DNA LOFT v3 cushioning that is lightweight, responsive, and durable.
SMOOTH, STABLE TRANSITIONS: The broad platform promotes smooth heel-to-toe transitions for a soft on-the-run experience.