Serve and smash your way to success with the Nike Zoom GP Challenge 1 tennis trainer in Smoke Grey/Sangria/Dk Smoke Grey, designed for wear on hard court surfaces and for players who aspire to be the best. This shoe is made to ensure your comfort and enhance your performance. Built specifically for quick changes in direction, the Nike Zoom GP Challenge 1 features a forefoot Air Zoom unit that helps you play on your toes, with a heel Air Zoom unit providing support as you step. A strong midfoot plastic plate provides stability, delivering quick cuts and power to your game when transferring energy from side to side. The webbing around the eyestays combines with the plate to offer a hugged containment when making dynamic movements around the court. While the heel has extra padding to keep you feeling comfortable and supported, it's designed specifically to enhance your rocker-like movements such as pulling back for a serve. Carefully crafted for long-lasting wear, the Zoom GP Challenge 1 is built with extra rubber in the toe area specifically the big toe side for additional durability that protects against scuffs and scrapes as you move quickly from side to side. High abrasion rubber in the forefoot enhances durability and traction at the sole for a reliable and resilient addition to your tennis footwear. A forefoot Air Zoom unit helps you play on your toes and puts a pop in your first step. A heel Air Zoom unit provides support. A strong midfoot plastic plate adds stability for quick cuts and power to your game when transferring energy from motion to motion. Webbing around the eyestays combined with the plate offer a sort of hugged containment when moving side to side. The heel is extra padded to help keep you comfortable and supported. Extra rubber in the toe area, specifically the big toe side, adds durability. High abrasion rubber in the forefoot offers durability and traction. We specifically designed the heel for rocker-like movements, like pulling back for a serve. Designed for wear on hard court surfaces. Cushioned insole.