NIKE Women's Zoom Winflo 3 Running Shoe Synthetic Rubber sole Shaft measures approximately 2.5" from arch Engineered mesh forefoot creates a breathable, supportive fit. Zoom Air unit gives responsive cushioning on impact. Flywire technology locks down the midfoot. Waffle outsole is durable and provides great multi-surface traction. Rubber crash rail on the lateral outsole smoothes out your transition.