Nike Zoom Stefan Janoski L Skate Shoe - Men's Black/Night Factor/Crystal Mint, 9.0 Leather-And-Synthetic Rubber sole Zoom technology is incredibly thin to bring your foot closer to the ground for stability and tightly stretched fibers pressurize upon impact to absorb shock Autoclave construction reduces bulk and reinforces the life of the shoe (and outperforms traditional glues) by fusing the upper to the sole