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 Zoom Air unit, it gives you a responsive ride with early 2000s style. Responsive Ride - Caged Zoom Air 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.