Nike Air Zoom Spiridon Cage 2 Shoes First released in 2003, the Nike Air Zoom Spiridon Cage 2 is as relevant today as ever. A full-length, arched foam midsole delivers a cushioned ride, while the ultra-breezy upper balances mesh textiles with smooth synthetic leather. Meanwhile, durable traction pods on the outsole provide grip and stability. And the original design lines and a caged Air Zoom unit wrapped in a glossy finish give you a responsive ride with early aughties style. Full-length foam midsole is lightweight and flexible. Durable rubber pods on the outsole provide traction where you need it.