Tennis players will love the adidas adiZero Ubersonic 2 Sun Tzu tennis shoes enhanced with incredibly lightweight materials to make speed a priority on the court. Now this shoe is even more responsive and has a Primeknit bootie for seamless comfort and fit. Bright colors and modern style make for an exciting new addition.Upper: Primeknit bootie hugs the foot, providing superior fit and comfort. Polymer mesh upper gives more stability in the forefoot. External Dual Density SPRINTFRAME construction ensures maximum heel support while preventing pronation. ADITUFF™ strategically placed TPU material in toe area and medial side provides long-lasting durability for the extreme abrasion that occurs during tennis movements.Midsole: ADIPRENE® and ADIPRENE®+ cushioning element in rearfoot and forefoot. Outsole: ADIWEAR™ 6 extremely durable outsole rubber provides secure grip in all direction for abrasive courts.