ADIZERO UBERSONIC 4 TENNIS SHOES SPEED-BOOSTING HARD COURT SHOES MADE IN PART WITH RECYCLED MATERIALS. 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.   MADE IN PART WITH RECYCLED MATERIALS Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste. LIGHT. SPEED. adidas Lightstrike is redefining the next generation of speed with a super-light midsole designed for dynamic, lightweight movement. REINFORCED MESH UPPER Reinforcements on the lateral side of the mesh upper keep you stable through sudden changes of direction. HARD COURT OUTSOLE An Adiwear outsole with a herringbone profile creates the perfect balance of traction and durability on hard court surfaces.   SPECIFICATIONS Sock-like fit Lace closure Woven mesh upper with internal reinforcement Textile lining Heel stability clip Lightstrike cushioning Rubber outsole Upper contains a minimum of 50% recycled content