If you are looking for ultimate softness and absolute comfort, the neutral Glycerin 21 offers an exceptionally velvety ride thanks to the even softer DNA LOFT v3 shock absorption, as well as a new, more improved upper that provides structure and breathability.

Compared to the Glycerin 20, the 21 has 2 millimeters more of the ultra-soft, nitrogen-infused DNA loft v3 for shock protection and to maximize softness. Ideal for smooth running with a sense of motion, thanks to the velvety shock protection designed to help you enjoy your run.