CAGED AIR. THROWBACK STYLE. First released in 2003, the Nike Air Zoom Spiridon Cage 2 is as relevant today as it was back in the day. Featuring original design lines and a caged Air Zoom unit, it gives you a responsive ride with early-2000s style. Responsive Ride Caged Air Zoom unit provides a responsive ride and a modern, technical look. Lightweight Flexibility Full-length foam midsole is lightweight and flexible. Durable traction Durable rubber pods on the outsole provide traction where you need it. Product details * Mesh upper * Not intended for use as Personal Protective Equipment