Asymmetrical fit secures & supports the foot, giving greater stability for faster, more accurate footwork. This shoe is built for stability, & fantastic durability. With Quattro fit, Flexion Upper, Durable Skin & 3-Layer Power Cushion technologies to ensure you are better than your best on court. This shoe features Power Cushion technology: a lightweight shock-absorbing material that gives comfort. Power cushion: * Absorbs shock & reverses impact energy * Smooth energy transfer into next movement *3 times more shock absorption than Urethane Including the 3-Layer Power Cushion: higher density top & bottom layers help the 3-layer Power Cushion absorb 30% more shock than the original Power Cushion. Converts shock energy into power for fast & light footwork. The shoes Flexion Upper asymmetrical upper design gives a better & more comfortable fit. Eyelets in the upper shoe follow the curved shape of the instep, hugging the foot & allowing all of the stress on landing to be absorbed through the toes & instep giving you confidence in you footwork. Flexible Durable Skin retains the shape of the upper shoe to help prevent any lateral movement of the foot. The Quattro Fit System from YONEX addresses the four key areas that impact on fit. Designed to reduce the excess space at the front of the shoe that is created by the smaller toes. Shaped shoe technology improves grip & power transfer when accelerating or stopping. Round Sole: The YONEX Round Sole is designed to provide all-around support for quick & smooth footwork. The Round Sole ensures smooth movements & the transfer of maximum energy.