Nike Mens Air Structure Shoe 'Grey Fog'Grey Fog Shoes The upper features an intricate mixture of materials like leather, mesh and TPU, adding depth, heritage style and durability. The padded, low cut collar looks sleek and feels great. Nike Air cushioning lets you journey in comfort day in and day out. The rubber sole adds traction and durability. Foam midsole SKU: DB1549 002 Note: US Men's Sizing. For women, we recommend going down a size and a half. The Nike Air Structure brings back an