Higher cuff provides extra stability to help with balance and hold the foot securely during the stride; Comfort padding and breathability in the tongue/ankle areas with buckle, power strap and lace closure system; Durable 264mm/10.4" - 279mm/11" low-profile design for enhanced balance and stability; 80mm/82A wheels and SG5 for better wear and moderate speed, upgradable to 84mm wheel for added speed