The 4th edition of the GT-1000TM is updated with new enhancements and features for your young athlete and future marathoner. The upper is made of engineered mesh and minimal overlays. The responsive SpEVA® midsole has been engineered to be smooth and cushioned, while the DuoMax® Support and Guidance Trussic SystemTM Systems provide excellent support for mild to moderate overpronators. Rearfoot and Forefoot GEL® Cushioning Systems attentuate shock and impact at the heel and toe-off phases. Pink Ribbon edition raises awareness for breast cancer, ASICS has teamed with Christina Applegate's Right Action for Women, who provide assistance to women who are at increased risk for breast cancer.