HERITAGE STYLE. MODERN COMFORT. The Nike Air Max 90 has been redesigned for casual wear while staying true to its '90s running roots. The Max Air unit helps cushion each step while the solid-rubber waffle outsole maximizes traction. Max Air unit in the heel helps provide impact cushioning. Padded collar provides plush comfort. Solid-rubber waffle outsole maximizes traction and durability while still being lightweight. Premium overlays help provide support and durability. Foam midsole provides durability and cushioning. Flex grooves in the outsole bend with your foot.