adidas Running - Ballistic (White/Metallic Silver/Dark Indigo) - Men's: Everything about it is built for speed training. adiPRENE® in the forefoot for a resilent toe-off, a lightweight supportive upper and flexible outsole for terrific response. Mesh nylon upper combines lightweight and breathability. adiPRENE(R) midsole maintains forefoot propulsion and efficiency. adiPRENE(R) insert for comfort and shock absorption. Carbon rubber outsole for durability.