SUPREME COMFORT The same super-soft cushioning for runners with a neutral stride. PRODUCT DETAILS 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. Sustainability 61.1% Recycled materials in the upper 3.75 Plastic bottles diverted from landfills Best For… Supreme softness Comfortable fit Support Road running Features Supreme softness Improved fit Whole-body support