Compared with conventional cushining material, the new POWER CUSHION boasts 28% more shock absorption and 62% more repulsion. By combining the cushioning effects of POWER CUSHION , both in the midsole and a high amount in the heel, with Power Graphite Drive technology, which helps propel your each step, Yonex has created a shoe that helps protect your knees and ankles while maintaining the sharpness of your game.