"The Yonex FusionRev 4 is the speed demon of the Yonex footwear family. If you are looking for a shoe to support your quick footwork and hard cuts, the FusionRev 4 from Yonex is for you. The monocoque, or booty, design combined with the Fusion Wing and Inner Skincomponents, enhances transition from one direction to another while also providing a snug fit. The shoe moves with your foot for quicker acceleration and superior agility. The combination of Power Cushion , Feather Bound FOAM, and Toughbrid Light,is effective at protecting your feet from theunforgiving life of hard court tennis. Give your feet what they deserve; give them the gift of Yonex."