Skechers Men's GOrun Forza Lace up,Blue/Orange,US 8.5 M Synthetic-and-mesh Combination of breathable mesh and 3D print synthetic - For a lightweight, breathable, and seamless construction that adds comfortability and support. Toe, heel and side synthetic detailing - for added stability. Synthetic overlays - providing more stability. Lightweight Resalyte cushioning - for additional impact protection and response. Medial counters - For a firm fit and motion control.