Speed buys time. Time earns points. That's why these adidas Adizero Ubersonic 4 tennis shoes were designed to get you to the ball faster. Their foot-hugging stretch-woven upper and external heel counter keep you strapped in for explosive sprints. Internal reinforcements add extra stability through slides and sidesteps. Underneath, a low-profile Lightstrike midsole and grippy Adiwear outsole combine to ensure you're always first to react on hard courts.