The Air Max Dn features a Dynamic Air unit system of dual-pressure tubes, creating a bouncy sensation with every step. The Dynamic Air unit system features two sets of dual-pressure tubes, with the firmest pressure in the heel and the softest pressure toward the midfoot, allowing air levels to shift for a smooth transition. Multilayered mesh on the upper is lightweight and breathable, while plush foam surrounds the Dynamic Air unit system to create soft support. foam midsole rubber outsole matte accents