The YONEX Power Cushion absorbs shock then reverses the impact energy for smooth transfer into the next movement. Compared with urethane, the YONEX Power Cushion construction provides three times more shock absorbing power. When dropped from 7m above a Power Cushion sheet, an egg will bounce back 4m without damage.The YONEX Round Sole is designed to provide all-around support for quick and smooth footwork. The Round Sole ensures smooth movements and transfer of maximum energy.For agile and stable footwork, the hexagrip pattern provides 3% more grip and is 20% lighter than standard sole material.ToughBrid Light retains the exact performance as ToughBrid yet is 11% lighter, generating a significant reduction in leg and knee stress.The Lateral Shell located on the outside of the forefoot prevents sliding at the edge of the sole. It reduces power loss, increases footwork response and creates smooth, fluid and offensive foot movements.The Tough Guard is three times stronger than ordinary synthetic leather and more resistant against heat for prolonged comfort and better performance.