The new Fusion Wing, which improves fit, gives you lightning-fast footwork. The Fusion Wing's position has been moved forward, increasing the sense of unity with the foot and stability, enabling quicker turns. The seamless design uses Durable Skin for the entire upper skin. Eliminating the stiffness caused by overlapping materials and stitching, the flexible, low-stretch Durable Skin provides a soft, integrated feel between the foot and the shoe. The midsole uses Featherlite X, which is approximately 30% lighter than regular EVA and approximately 12% lighter than the conventional lightweight material Hyper Featherlite. This lightweight material maintains the same weight as the current model, despite using the heavy-density Durable Skin throughout.