The Labeda Dynasty III , AKA D3, wheel features a new Dynasty core and uses a more advanced urethane. The Dynasty Core offers more flex allowing the wheel to flatten in turns, widening its surface area, providing maximum gripping power. The Dynasty continues to be a triple durometer urethane construction to get the right balance of grip and speed. The D3 uses the same advanced urethane as the Addiction wheel, just layered differently to really focus on grip. The outer urethane layer is soft for maximum grip while the inner urethane ring works to retract and spring back under different stride loads. It provides unmatched straight away speeds while producing energy in the tightest corning. The flex core urethane allows the wheel to flex to maximize the outer layer's footprint (contact with the floor) and spring back at it's designated points. Ideal for fast indoor play. [+]