Northwave Extreme Shoe - Men's Matte Black, 44.0 Thermowelded Unibody Upper Featuring Biomap Technology For Better Fit And Reduced Weight Asymmetrical3-Strap Closure Reduce Pressure On Most Sensitive Areas Of Foot While Maintaining Secure Fit Ultralight Full Carbon Outsole With Uni-Directional Carbon For Maximum Stiffness And Reduced Weight Airflow System Prevents Overheating Of The Sole And Foot Integrated Heel System With Non-Slip Material For Secure Fit