New Balance Men's MX1315 Cross-training Shoe 100% Synthetic and mesh NB ZIP is strategically located struts engineered between top and bottom plates, formulated for optimal cushioning, responsiveness and durability ACTEVA LITE is 24% lighter than standard midsole foam with Dupont Elvaloy and Dupont Engage for optimal compression set properties Ndurance is a rubber compound for maximum durability used in high wear areas Full EVA strobel board ABZORB provides a superior blend of cushioning and compression set features with Dupont Engage and Isoprene rubber for the ultimate ride