The Brooks Women's Adrenaline GTS 19 features an innovative GuideRails support system, soft cushioning & smooth heel-to-toe transitions. Brooks shifted their focus beyond the feet, to the most injury-prone part of a runner's body: the knees. GuideRails keep you moving comfortably by keeping excess movement in check. BioMoGo DNA and DNA LOFT cushioning work together to provide a just-right softness underfoot without losing responsiveness and durability. Engineered mesh and the 3D Fit Print upper provide the structure and proven fit of this Go-To Shoe with a streamlined look.