Nike Air Diamond Turf Men's Shoes The Air Diamond Turf takes this cross trainer from 1994 and gives it a street-ready refresh. This version features Air units in the heel and forefoot, plus durable leather and a midfoot strap for a secure fit. Leather upper with mesh panels is breathable and durable. Nike Air units provide comfort and cushioning for a soft underfoot feel. Rubber outsole adds traction and durability.