ZigTech, one-of-a-kind zig-zag-shaped sole, absorbs the impact of heel strike and propels you forward, while reducing wear and tear up to 20% in key leg muscles. Synthetic/mesh upper ensures comfort, fit and durability. DMX Shear cushioning panels for added comfort and reduced heel stress; forefoot flex grooves for added flexibility. PU sockliner for added cushioning and support. Glossy black patent leather. Standard D width only.