i1 Cage is a fast, responsive and lightweight indoor shoe with a high level of durability and support. A low-profile ARC Foamplatform with full ground contact traction rubber outsole gives great ground feel and is perfectly engineered for lateral stability. The upper features a KPU cage that is flexible, light and incredibly strong. This shoe is the complete package for serious indoor athletes. Durable yet breathable nylon mesh upperKPU-engineered cage with mid-foot flexible ribs, heel-stability layer, durable toe cap reinforcement, and added lateral durability to prevent blow-outsLightweight ARC Foammidsole with responsive tuningOutsole with premium grip rubber compound for superior tractionTPU chassis under the foot for best-in-class stability