NEW MODEL FOR 2013!!! Superlight mesh and microfiber leather upper for enhanced breathability and comfort. Ultra-light, perforated tongue offers enhanced breathability and comfort. External SPRINTWEB TPU layer for unrivaled lateral movement stability. SPRINTFRAME outsole throughout the sole provides superlight performance and support where needed. Built on a athletic running last for a sneaker-like feel and comfortable fit. CLOUDFOAM sockliner provides lasting comfort and lightweight cushioning with every step. 6-spike configuration with THINTECH low-profile technology for optimal traction and stability.