adidas The ultimate expression of speed on a tennis court. When you lace up these lightweight adizero Ubersonic 4 shoes, you can be sure they'll complement your all-action style. Engineered for agile play, their snug woven mesh upper is reinforced from within to add stability during sidesteps and slides. Sitting on that durable hard court outsole, a Lightstrike midsole keeps you close to the ground for quick reactions.