Men's Glycerin GTS 21

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.

• Supreme softness - Compared to the Glycerin20, the Glycerin21 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, acomodating fit while staying soft against your foot.
• Whole-body support - Our innovative GuideRails technology supports your body in its natural motion path while keeping excess movement in check. 
• Designed for road running
• 10mm Drop
• Weight 10.5oz / 297.7g