The Glycerin GTS 20 features our GuideRails® support technology that keeps excess movement in check so you stay in your ideal stride. Plus, supremely soft DNA LOFT v3 ensures these super cushioned running shoes deliver total comfort. Supreme softness Improved fit Smart support New lightweight upperA smooth and floaty-feeling run thanks to plush cushioning designed to help you enjoy and savor your run. Excellent condition...worn a couple of times.