ARTICULATION GEOMETRY-Strategically placed grooves and chambers placed in the outsole, midsole, and upper provide points for the shoe to move with your foot while still providing the ultimate level of support COMFORT CONSTRUCTION-Mesh bootie construction replaces traditional tongue for improved 360 degree fit, comfort and support PWRCAGE-Super strong and lightweight TPU saddle provides excellent support and stability throughout your swing PWRFRAME-Ultra-thin TPU frame strategically placed in high stress areas on upper for lightweight support and increased stability IGNITE FOAM-Revolutionary and proprietary midsole foam provides energy return, responsive comfort, stable cushioning, and superior step-in comfort