NIKE Air Max 90 Premium Mens Running Shoes 333888-017 Dark Grey 10.5 M US Leather Rubber sole Leather upper with strategically placed overlays for durability and support. Air-Sole unit in heel for exceptional cushioning. Rubber outsole waffle pattern for superior traction. Flex grooves mirror the foot gait to match natural motion. Additional eyestays for customized lacing and a locked-down fit.