Supreme Softness
- Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our 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 fit while staying soft against your foot.
Smooth, Stable Transitions
- The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions.
- Midsole drop 10mm
- Weight 8.8oz / 249.5g