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This is the plush end of the Brooks lineup with a little extra guidance built in. Nitrogen-infused DNA Loft v3 foam gives the Glycerin 21 its soft, cushioned landing, while the GuideRails support system gently holds your knees and ankles in line when form starts to fade late in a run. The engineered mesh upper is soft against the foot and breathes through warm miles. Five colorways mean there is a quiet option and a brighter one, depending on how visible you want to be on early morning routes.
Nitrogen-infused DNA Loft v3 for plush cushioning
GuideRails holistic support for added stability
Engineered mesh upper with a soft interior
Built for daily training and long, easy miles
Five colorways including Black/Blue/Nightlife and Coconut/Forged Iron/Yellow
