Style#: FB8987-004 Our Dynamic Air unit system features 2 sets of dual-pressure tubes. We tuned each set to a different pressure level, putting the firmest in the heel and the softest under the middle of your foot. Air shifts within each set as you step, creating a smooth transition underfoot. Providing comfort from top to bottom, these sneakers boasts performance-level bounce to energize your every move. After all, who said going to a concert isn't a sport? The Air Max Dn features our Dynamic Air unit system of dual-pressure tubes, creating a bouncy sensation with every step. Nike Air Max DN GS Boys Shoes Size 6.5, Color: Black/Black/Black-Black