NIKE ACG Salbolier Trail Walking Shoes Split suede and leather upper - with mesh for durability and breathability, keeping your feet nice and cool in hot conditions. Phylon Midsole - helps to give lightweight cushioning where you need it the most. Sticky rubber outsole with ascending and descending traction pattern for traction on a variety of surfaces, whether it is on a slippery woodland area or on a wet pavement. Air mesh lining - An air mesh lining which provides great breathability providing good air flow. Foam heel collar - To provide decent levels of comfort around ankle and heel area and reduce the chance of chaffing.