Under Armour Micro G Split II Running Shoes Full-Length Mirco G foam cushions - Thin and Light, not only that, it's highly cushioned as well as featuring bulkier foam, it helps rebounds your heel-strike energy, creating forward momentum. Seamless HeatGear fabric - Highly durable, the fabric wicks sweat to keep your feet cool and dry Carbon and blown rubber outsole - Tough and lightweight, also provides superior traction. Midfoot strap - For stability and fit. Soft synthetic upper - makes the shoe nice and lightweight but increases durability and life span of the shoes.