The comfort and support of Diadora Speed Star K VII AG tennis shoes will help facilitate quick and bursting movement on the court. You'll feel sustained comfort and freshness through every match thanks to the soft anti-bacterial lining and Power Flow ventilation system. Tennis players will control the court with the pro look and performance of these shoes.Upper:Kangaroo leather delivers durability, structure, and waterproof support. Abrasion-resistant toe cap provides protection and durability. Padded tongue and heel collar enhances comfort. Lace-up front offers an adjustable fit. Anti-bacterial lining delivers a refreshing feel and long-lasting wear.Midsole: Removable Ortholite® insole keeps the foot cooler inside the shoe. Molded EVA foam provides comfort and support. CCB medial stabilizer controls torsional stability in the arch area, delivering lightness, stability without altering shock absorption. Double Action 2 Plus eliminates negative vibrations in the heel area. Axeler W5 ensures maximum shock absorption during impact with the ground. Power Flow ventilation system grants optimum change of air within the shoe. Outsole: Rubber with special Duratech 5000 wearproof compound for durability and exceptional traction. Non-marking outsole.