Blending maximum support and comfort into perfect balance for peak performance, the Brooks Glycerin 20 is ready to rack up the miles all while providing a smooth ride across the finish line. An improved fit helps with smooth transitions as you find your groove, while a new lightweight knitted mesh upper keeps your feet feeling fresh with enhanced airflow. DNA LOFT V3 cushioning keeps your feet feeling fresh with unbeatable comfort that adapts to your stride to get you through any challenge.