Lace up and head out in supreme comfort. For the men's Glycerin GTS 21, we added 2mm more super soft DNA LOFT v3 cushioning for extra plushness, while our innovative GuideRails support system keeps you comfortably in stride. Plus an updated, streamlined upper adds breathability.

Cushy Comfort - Supreme Softness

Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our super-soft, nitrogen-fused DNA LOFT v3 cushioning to maximize softness

Treat Your Feet Right - Improve Fit

New, engineered warp knit upper is breathable and allows for a flexible, accommodating fit while staying soft against your foot.

Stay In Your Stride - Smart Support

Our innovative GuideRails technology supports your body in its natural motion path while keeping excess movement in check.