A stretchy inner sock and a lightweight, flexible cage keep the fit dynamic and distraction-free in a tennis shoe that turns every step into springy energy. It sits on a fusion of durable tread technologies that stand up to the most aggressive play on both clay and hard courts. Tennis: provides a durable, supportive foundation for quick-change movements on clay and hard courts Energy return: transforms every heel strike into responsive, explosive movement Lace-up style Removable insole allows for custom orthotics DuraWrap Flex upper provides lightweight, dynamic support with no break-in period Surge 7.0 responsive cushioning maximizes the energy return of every step DragGuard 7.0 rubber tread puts a durable foundation under every step Aösta 7.0 high-density rubber tread delivers durable, reliable traction Synthetic and textile upper and lining/rubber and synthetic sole Imported Men's Shoes