Don?t miss a shot in the Adizero Defiant Bounce Men?s Tennis Shoes. Designed with mesh uppers for maximum breathability, the shoes fit like a second skin. ADIWEAR 6 outsole offers the ultimate in high-wear durability, with special suctioning returning energy in every step you take. Added protection, in the form of Abrasion-resistant ADITUFF, wraps around the forefoot, protecting you against abrasion and foot drag that occurs during serves.