New Balance Men's RC769 Racing Comp 100% Synthetic and mesh ABZORB provides a superior blend of cushioning and compression set features with Dupont Engage and Isoprene rubber for the ultimate ride ACTEVA is 12% lighter than standard midsole foam with DuPont Engage for exceptional durability Stability Web provides optimal arch support thats both rigid and lightweight while preventing midfoot flex Ndurance is a rubber compound for maximum durability used in high wear areas Blown Rubber Forefoot