Grey Knitted Lace Up Trainers Brimming with the 'functional fashion' element that embodies Cole Haan's DNA, the 2zerogrand Stitchlite Oxf trainer is one for lovers of effortless athleisure. Designed with a wingtip knitted upper in grey, this lace-up style is built with the brand's lightweight intelligence that promotes airflow and keeps feet cool in warm temperatures.