Enjoy supreme softness and ultimate comfort from your first step.

Supreme softness
Compare to the Glycerin 20, Glycerin 21 features 2mm more of the super-soft, nitrogen-infused DNA Loft v3 cushioning to maximize softness.

Improved fit
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.