Updated for a lighter and more supportive fit, the Brooks® Men's Beast  20 running shoe gets you where you need to go in your next training  cycle. Made with Brooks® Super DNA midsole and a segmented crash pad,  these shoes provide superior cushioning perfect for every training run  and even for the big day. Comfortable feet lead to comfortable knees, at least that's the idea  behind this well-cushioned support shoe. Featuring super-soft BioMoGo  DNA cushioning and a pillowy sockliner for comfort on long runs, it also  has GuideRails technology in the midsole to help limit the unwanted  movement that sends shock waves up your leg and causes sore knees.