Speed buys time. Time earns points. That's why these adidas Adizero Ubersonic 4 Tennis Shoes were created to get you to the ball faster. The stretch-woven upper and external heel clip strap you in for explosive sprints while internal reinforcements add lateral stability. A low-profile Lightstrike midsole and grippy Adiwear outsole help with reaction times. HEAT.RDY ensures nothing slows you down on the hottest days.