Features for these shoes include: MBT Index: Performance Upper: Synthetic Leather/Mesh Food-bed: Mesh Mid-Sole: SensorTechnology Out-Sole: Non-Marking Rubber MBT SensorTechnology in the heel complements the midfoot sensor by absorbing shock MBT innovative Pivot Strike area provides runners with the ideal foot striking platform to transition into propulsion while enhancing support and cushioning High Abrasion Rubber Outsole for superior strength with minimal weight Accepted by the American Podiatric Medical Association for promoting quality foot health Buy Women's Colorado X Dutch Blue Walking Sneakers 702640-1340Y Size 7.5 Online at MBT Shoes Official USA Store