NIKE Dart 9 Running Shoes Phylon - midsole with natural motion engineering provides a smooth, well-cushioned ride. Waffle - outsole pattern gives great traction and durability. TPU midfoot - for superior light-weight support and to give your foot the comfort it needs Breathable leather upper - combined with a midfoot overlay to give you a great fit and com Padded heel - and ankle for when you are running hard.