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 3 times more shock absorbing power. When dropped from 7m above a Power Cushion sheet, an egg will bounce back 4m without damage. RADIAL BLADE SOLE The grip pattern of the sole has been redesigned creating the RADIAL BLADE SOLE. By finely arranging a windmill shape that combines areas with large and small indentations, the weight of the shoe is dispersed, and the grip is improved by approximately 3%*. Resulting in a grip that supports quick dashes and sudden stops.