Nike Zoom GP Challenge 1 men's clay court tennis shoe Striking. Brilliant! For the best of the best and everyone on the way there. The GP Challenge 1 is made for boldly converting break opportunities, confidently serving and impressively smashing. Thanks to Air Zoom elements, lateral stability and a consistent fit, you can unleash all your inner power in your next match. Zoom, Zoom With the Air Zoom element in the forefoot, you can play on your toes. It also gives your kick a little more energy. An Air Zoom element in the heel provides support. Keep moving A robust plastic midfoot plate provides stability during quick changes of direction and gives you power when playing, transferring energy from movement to movement. Reinforcements on the eyelet strips and sole ensure a snug fit and support during lateral movements. This is further enhanced by the additional padding on the heel. Durable traction Additional rubber in the toe area, especially on the big toe, offers more durability. Extra abrasion-resistant rubber in the forefoot provides durability and traction. The heel area has been specially developed for abrupt movements, such as pulling the foot back at impact. Easy to put on The traditional U-design in the neck area allows for easy donning and adjustability. The padded tongue with breathable mesh keeps you cool and comfortable. Ready for the red clay Nike Claybreaker technology provides improved traction and less clay buildup on clay courts. The added grip in the forefoot and midfoot provides a wide traction pattern for control when sliding. We used traction maps, pressure maps and analyzed sand build-up areas for the design. Then we tested it on red clay courts in Europe under various clay court conditions (cold, warm, wet and dry). More DetailsDesigned to be worn on clay and padel courts.