adidas Adizero Feather II Running Shoes Mesh Upper - Air mesh upper for maximum ventilation. AdiPrene technology - adiPRENE+ in the forefoot maintains propulsion and efficiency. Sprint Web - Welded sprint web for support and breathability. Lightweight Moulded foam - Lightweight but responsive moulded foam insole for comfort and cushioning. Outsole - adiWEAR outsole offers the ultimate in high-wear durability