The Brooks Women's Adrenaline GTS 21 Running Shoes give you the best in comfort and performance that is custom made for your stride. They are made from a new Engineered Air Mesh upper that hugs the foot for a secure fit while also improving breathability while the 3D Fit Print applies strategic stretch and structure to the upper. These shoes are designed with DNA LOFT cushioning that goes beyond the heel, all the way to the forefoot, for a buttery smooth stride while their GuideRails® holistic support system keeps you moving comfortably by keeping excess movement in check and your knees in a better position. Run more comfortable and further with the Brooks Women's Adrenaline GTS 21 Running Shoes!