Brooks Men’s Glycerin GTS 21 Running Shoe. added 2mm more super soft DNA LOFT v3 cushioning from the last Glycerin release 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 In excellent used condition. A couple of black scuffs and small knick in sole, as indicated in photos. Lots of miles left. Will not ship in original box.