Reebok Men's Premier ZigBlaze Stability Running Shoe 100% Synthetic and mesh Rubber sole ZigTech, one-of-a-kind zig-zag-shaped sole, absorbs the impact of heel strike and propels Lightweight Synthetic/mesh upper ensures comfort, fit and durability when you need it the Superior DMX Shear cushioning panels for added comfort and reduced heel stress. Forefoot flex grooves for added flexibility. Breathable nylon mesh to keep your feet cool.