Glycerin: super cushioned and light running shoes
Experience soft strides like never before unlocked by Brooks innovative nitrogen-infusion process in the Glycerin 21, delivering ultimate softness under your feet.
Enjoy supreme softness and ultimate comfort from your first step.
Compare to the Glycerin 20, Glycerin 21 features 2mm more of the super-soft, nitrogen-infused DNA Loft v3 cushioning to maximize softness.
New, engineered warp knit upper is breathable and allows for a flexible, accommodating fir while staying soft against your foot.
Smooth, stable transitions
The broad stabilizes your foot and promotes smooth heel-to-toe transitions.