Click here for footwear size charts between brands. Click here for nutrition comparison chart. Click here for COROS watch comparison chart.
Our softest cushioning for supreme comfort and distraction-free miles. Nitro-infused softness: Experience ultimate cushion in the Glycerin 21 with nitrogen-infused DNA LOFT v3 technology, which delivers lightweight, super-soft cushioning and ultimate comfort for your feet.
Updated midsole features nitrogen-infused DNA LOFT v3, our softest cushioning yet.
New cushioning and redesigned outsole deliver smoother and more stable transitions.
All-new engineered mesh upper is lightweight and breathable.
